Finding the Fourth Proportional to 52,404.82, 72,320.16 and 28,531.90

Step by Step Solution

1. Step 1: Write the proportion equation
   52,404.82 : 72,320.16 = 28,531.90 : x
2. Step 2: Convert to fraction form
   52,404.82/72,320.16 = 28,531.90/x
3. Step 3: Cross multiply
   52,404.82x = 72,320.16 × 28,531.90
4. Step 4: Simplify right side
   52,404.82x = 2,063,431,573.10
5. Step 5: Solve for x
   x = 2,063,431,573.10/52,404.82
6. Step 6: Final answer
   x = 39,374.84