Finding the Fourth Proportional to 506,142.72, 759,215.12 and 151,128.86

Step by Step Solution

1. Step 1: Write the proportion equation
   506,142.72 : 759,215.12 = 151,128.86 : x
2. Step 2: Convert to fraction form
   506,142.72/759,215.12 = 151,128.86/x
3. Step 3: Cross multiply
   506,142.72x = 759,215.12 × 151,128.86
4. Step 4: Simplify right side
   506,142.72x = 114,739,311,028.64
5. Step 5: Solve for x
   x = 114,739,311,028.64/506,142.72
6. Step 6: Final answer
   x = 226,693.59