Finding the Fourth Proportional to 88,090.28, 121,665.58 and 58,010.12

Step by Step Solution

1. Step 1: Write the proportion equation
   88,090.28 : 121,665.58 = 58,010.12 : x
2. Step 2: Convert to fraction form
   88,090.28/121,665.58 = 58,010.12/x
3. Step 3: Cross multiply
   88,090.28x = 121,665.58 × 58,010.12
4. Step 4: Simplify right side
   88,090.28x = 7,057,834,895.67
5. Step 5: Solve for x
   x = 7,057,834,895.67/88,090.28
6. Step 6: Final answer
   x = 80,120.47