Finding the Fourth Proportional to 99,574.50, 137,350.04 and 59,258.17

Step by Step Solution

1. Step 1: Write the proportion equation
   99,574.50 : 137,350.04 = 59,258.17 : x
2. Step 2: Convert to fraction form
   99,574.50/137,350.04 = 59,258.17/x
3. Step 3: Cross multiply
   99,574.50x = 137,350.04 × 59,258.17
4. Step 4: Simplify right side
   99,574.50x = 8,139,112,019.83
5. Step 5: Solve for x
   x = 8,139,112,019.83/99,574.50
6. Step 6: Final answer
   x = 81,738.92