Finding the Fourth Proportional to 93,200.90, 128,626.18 and 57,411.86

Step by Step Solution

1. Step 1: Write the proportion equation
   93,200.90 : 128,626.18 = 57,411.86 : x
2. Step 2: Convert to fraction form
   93,200.90/128,626.18 = 57,411.86/x
3. Step 3: Cross multiply
   93,200.90x = 128,626.18 × 57,411.86
4. Step 4: Simplify right side
   93,200.90x = 7,384,667,451.83
5. Step 5: Solve for x
   x = 7,384,667,451.83/93,200.90
6. Step 6: Final answer
   x = 79,233.87