Finding the Fourth Proportional to 12,786,361,742,834, 19,180,670,128,328 and 3,607,499,873,124.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786,361,742,834 : 19,180,670,128,328 = 3,607,499,873,124.70 : x
2. Step 2: Convert to fraction form
   12,786,361,742,834/19,180,670,128,328 = 3,607,499,873,124.70/x
3. Step 3: Cross multiply
   12,786,361,742,834x = 19,180,670,128,328 × 3,607,499,873,124.70
4. Step 4: Simplify right side
   12,786,361,742,834x = 69,194,265,054,389,991,039,303,680
5. Step 5: Solve for x
   x = 69,194,265,054,389,991,039,303,680/12,786,361,742,834
6. Step 6: Final answer
   x = 5,411,567,922,608.58