Finding the Fourth Proportional to 499,131.72, 748,675.71 and 144,160.56

Step by Step Solution

1. Step 1: Write the proportion equation
   499,131.72 : 748,675.71 = 144,160.56 : x
2. Step 2: Convert to fraction form
   499,131.72/748,675.71 = 144,160.56/x
3. Step 3: Cross multiply
   499,131.72x = 748,675.71 × 144,160.56
4. Step 4: Simplify right side
   499,131.72x = 107,929,509,612.00
5. Step 5: Solve for x
   x = 107,929,509,612.00/499,131.72
6. Step 6: Final answer
   x = 216,234.52