Finding the Fourth Proportional to 115,462,404.52, 159,300,627.78 and 78,729,202.60

Step by Step Solution

1. Step 1: Write the proportion equation
   115,462,404.52 : 159,300,627.78 = 78,729,202.60 : x
2. Step 2: Convert to fraction form
   115,462,404.52/159,300,627.78 = 78,729,202.60/x
3. Step 3: Cross multiply
   115,462,404.52x = 159,300,627.78 × 78,729,202.60
4. Step 4: Simplify right side
   115,462,404.52x = 12,541,611,398,798,808
5. Step 5: Solve for x
   x = 12,541,611,398,798,808/115,462,404.52
6. Step 6: Final answer
   x = 108,620,736.34