Finding the Fourth Proportional to 56,847.59, 85,174.29 and 31,872.05

Step by Step Solution

1. Step 1: Write the proportion equation
   56,847.59 : 85,174.29 = 31,872.05 : x
2. Step 2: Convert to fraction form
   56,847.59/85,174.29 = 31,872.05/x
3. Step 3: Cross multiply
   56,847.59x = 85,174.29 × 31,872.05
4. Step 4: Simplify right side
   56,847.59x = 2,714,678,803.72
5. Step 5: Solve for x
   x = 2,714,678,803.72/56,847.59
6. Step 6: Final answer
   x = 47,753.63