Finding the Fourth Proportional to 110,309,875.29, 165,249,554.32 and 85,934,669.63

Step by Step Solution

1. Step 1: Write the proportion equation
   110,309,875.29 : 165,249,554.32 = 85,934,669.63 : x
2. Step 2: Convert to fraction form
   110,309,875.29/165,249,554.32 = 85,934,669.63/x
3. Step 3: Cross multiply
   110,309,875.29x = 165,249,554.32 × 85,934,669.63
4. Step 4: Simplify right side
   110,309,875.29x = 14,200,665,856,275,110
5. Step 5: Solve for x
   x = 14,200,665,856,275,110/110,309,875.29
6. Step 6: Final answer
   x = 128,734,311.58