Finding the Fourth Proportional to 56,758.57, 85,061.31 and 28,698.42

Step by Step Solution

1. Step 1: Write the proportion equation
   56,758.57 : 85,061.31 = 28,698.42 : x
2. Step 2: Convert to fraction form
   56,758.57/85,061.31 = 28,698.42/x
3. Step 3: Cross multiply
   56,758.57x = 85,061.31 × 28,698.42
4. Step 4: Simplify right side
   56,758.57x = 2,441,125,200.13
5. Step 5: Solve for x
   x = 2,441,125,200.13/56,758.57
6. Step 6: Final answer
   x = 43,008.93