Finding the Fourth Proportional to 88,916.32, 133,410.54 and 38,970.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,916.32 : 133,410.54 = 38,970.10 : x
2. Step 2: Convert to fraction form
   88,916.32/133,410.54 = 38,970.10/x
3. Step 3: Cross multiply
   88,916.32x = 133,410.54 × 38,970.10
4. Step 4: Simplify right side
   88,916.32x = 5,199,022,084.85
5. Step 5: Solve for x
   x = 5,199,022,084.85/88,916.32
6. Step 6: Final answer
   x = 58,470.95