Finding the Fourth Proportional to 498,402.72, 747,584.64 and 165,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   498,402.72 : 747,584.64 = 165,978.72 : x
2. Step 2: Convert to fraction form
   498,402.72/747,584.64 = 165,978.72/x
3. Step 3: Cross multiply
   498,402.72x = 747,584.64 × 165,978.72
4. Step 4: Simplify right side
   498,402.72x = 124,083,141,638.86
5. Step 5: Solve for x
   x = 124,083,141,638.86/498,402.72
6. Step 6: Final answer
   x = 248,961.61