Finding the Fourth Proportional to 101,467.42, 140,025.20 and 56,147.31

Step by Step Solution

1. Step 1: Write the proportion equation
   101,467.42 : 140,025.20 = 56,147.31 : x
2. Step 2: Convert to fraction form
   101,467.42/140,025.20 = 56,147.31/x
3. Step 3: Cross multiply
   101,467.42x = 140,025.20 × 56,147.31
4. Step 4: Simplify right side
   101,467.42x = 7,862,038,242.03
5. Step 5: Solve for x
   x = 7,862,038,242.03/101,467.42
6. Step 6: Final answer
   x = 77,483.38