Finding the Fourth Proportional to 113,310,940.68, 156,369,105.72 and 64,418,368.68

Step by Step Solution

1. Step 1: Write the proportion equation
   113,310,940.68 : 156,369,105.72 = 64,418,368.68 : x
2. Step 2: Convert to fraction form
   113,310,940.68/156,369,105.72 = 64,418,368.68/x
3. Step 3: Cross multiply
   113,310,940.68x = 156,369,105.72 × 64,418,368.68
4. Step 4: Simplify right side
   113,310,940.68x = 10,073,042,702,432,856
5. Step 5: Solve for x
   x = 10,073,042,702,432,856/113,310,940.68
6. Step 6: Final answer
   x = 88,897,353.09