Finding the Fourth Proportional to 60,619.46, 90,788.18 and 58,517.10

Step by Step Solution

1. Step 1: Write the proportion equation
   60,619.46 : 90,788.18 = 58,517.10 : x
2. Step 2: Convert to fraction form
   60,619.46/90,788.18 = 58,517.10/x
3. Step 3: Cross multiply
   60,619.46x = 90,788.18 × 58,517.10
4. Step 4: Simplify right side
   60,619.46x = 5,312,660,715.29
5. Step 5: Solve for x
   x = 5,312,660,715.29/60,619.46
6. Step 6: Final answer
   x = 87,639.53