Finding the Fourth Proportional to 128,520,352.38, 177,353,111.94 and 69,781,673.10

Step by Step Solution

1. Step 1: Write the proportion equation
   128,520,352.38 : 177,353,111.94 = 69,781,673.10 : x
2. Step 2: Convert to fraction form
   128,520,352.38/177,353,111.94 = 69,781,673.10/x
3. Step 3: Cross multiply
   128,520,352.38x = 177,353,111.94 × 69,781,673.10
4. Step 4: Simplify right side
   128,520,352.38x = 12,375,996,880,664,786
5. Step 5: Solve for x
   x = 12,375,996,880,664,786/128,520,352.38
6. Step 6: Final answer
   x = 96,296,008.00