Finding the Fourth Proportional to 12,786,361,742,838, 19,180,670,128,335 and 3,607,499,873,128.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786,361,742,838 : 19,180,670,128,335 = 3,607,499,873,128.60 : x
2. Step 2: Convert to fraction form
   12,786,361,742,838/19,180,670,128,335 = 3,607,499,873,128.60/x
3. Step 3: Cross multiply
   12,786,361,742,838x = 19,180,670,128,335 × 3,607,499,873,128.60
4. Step 4: Simplify right side
   12,786,361,742,838x = 69,194,265,054,490,038,007,496,704
5. Step 5: Solve for x
   x = 69,194,265,054,490,038,007,496,704/12,786,361,742,838
6. Step 6: Final answer
   x = 5,411,567,922,614.71