Finding the Fourth Proportional to 52,780.31, 72,818.75 and 30,102.99

Step by Step Solution

1. Step 1: Write the proportion equation
   52,780.31 : 72,818.75 = 30,102.99 : x
2. Step 2: Convert to fraction form
   52,780.31/72,818.75 = 30,102.99/x
3. Step 3: Cross multiply
   52,780.31x = 72,818.75 × 30,102.99
4. Step 4: Simplify right side
   52,780.31x = 2,192,061,952.55
5. Step 5: Solve for x
   x = 2,192,061,952.55/52,780.31
6. Step 6: Final answer
   x = 41,531.82