Finding the Fourth Proportional to 52,761.32, 72,810.60 and 28,887.98

Step by Step Solution

1. Step 1: Write the proportion equation
   52,761.32 : 72,810.60 = 28,887.98 : x
2. Step 2: Convert to fraction form
   52,761.32/72,810.60 = 28,887.98/x
3. Step 3: Cross multiply
   52,761.32x = 72,810.60 × 28,887.98
4. Step 4: Simplify right side
   52,761.32x = 2,103,351,338.61
5. Step 5: Solve for x
   x = 2,103,351,338.61/52,761.32
6. Step 6: Final answer
   x = 39,865.41