Finding the Fourth Proportional to 93,380.57, 128,861.31 and 55,152.42

Step by Step Solution

1. Step 1: Write the proportion equation
   93,380.57 : 128,861.31 = 55,152.42 : x
2. Step 2: Convert to fraction form
   93,380.57/128,861.31 = 55,152.42/x
3. Step 3: Cross multiply
   93,380.57x = 128,861.31 × 55,152.42
4. Step 4: Simplify right side
   93,380.57x = 7,107,012,711.54
5. Step 5: Solve for x
   x = 7,107,012,711.54/93,380.57
6. Step 6: Final answer
   x = 76,108.04