Finding the Fourth Proportional to 52,330.40, 72,217.86 and 29,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,330.40 : 72,217.86 = 29,978.72 : x
2. Step 2: Convert to fraction form
   52,330.40/72,217.86 = 29,978.72/x
3. Step 3: Cross multiply
   52,330.40x = 72,217.86 × 29,978.72
4. Step 4: Simplify right side
   52,330.40x = 2,164,999,003.94
5. Step 5: Solve for x
   x = 2,164,999,003.94/52,330.40
6. Step 6: Final answer
   x = 41,371.73