Finding the Fourth Proportional to 117,123,978.92, 161,536,845.92 and 102,964,891.17

Step by Step Solution

1. Step 1: Write the proportion equation
   117,123,978.92 : 161,536,845.92 = 102,964,891.17 : x
2. Step 2: Convert to fraction form
   117,123,978.92/161,536,845.92 = 102,964,891.17/x
3. Step 3: Cross multiply
   117,123,978.92x = 161,536,845.92 × 102,964,891.17
4. Step 4: Simplify right side
   117,123,978.92x = 16,632,623,760,097,858
5. Step 5: Solve for x
   x = 16,632,623,760,097,858/117,123,978.92
6. Step 6: Final answer
   x = 142,008,698.08