Finding the Fourth Proportional to 78,180,999.94, 107,889,738.09 and 42,899,036.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,180,999.94 : 107,889,738.09 = 42,899,036.71 : x
2. Step 2: Convert to fraction form
   78,180,999.94/107,889,738.09 = 42,899,036.71/x
3. Step 3: Cross multiply
   78,180,999.94x = 107,889,738.09 × 42,899,036.71
4. Step 4: Simplify right side
   78,180,999.94x = 4,628,365,834,955,196
5. Step 5: Solve for x
   x = 4,628,365,834,955,196/78,180,999.94
6. Step 6: Final answer
   x = 59,200,647.71