Finding the Fourth Proportional to 60,128.76, 90,061.92 and 36,684.12

Step by Step Solution

1. Step 1: Write the proportion equation
   60,128.76 : 90,061.92 = 36,684.12 : x
2. Step 2: Convert to fraction form
   60,128.76/90,061.92 = 36,684.12/x
3. Step 3: Cross multiply
   60,128.76x = 90,061.92 × 36,684.12
4. Step 4: Simplify right side
   60,128.76x = 3,303,842,280.71
5. Step 5: Solve for x
   x = 3,303,842,280.71/60,128.76
6. Step 6: Final answer
   x = 54,946.12