Finding the Fourth Proportional to 99,221.33, 136,921.50 and 58,934.03

Step by Step Solution

1. Step 1: Write the proportion equation
   99,221.33 : 136,921.50 = 58,934.03 : x
2. Step 2: Convert to fraction form
   99,221.33/136,921.50 = 58,934.03/x
3. Step 3: Cross multiply
   99,221.33x = 136,921.50 × 58,934.03
4. Step 4: Simplify right side
   99,221.33x = 8,069,335,104.04
5. Step 5: Solve for x
   x = 8,069,335,104.04/99,221.33
6. Step 6: Final answer
   x = 81,326.62