Finding the Fourth Proportional to 52,301.86, 72,177.05 and 28,428.59

Step by Step Solution

1. Step 1: Write the proportion equation
   52,301.86 : 72,177.05 = 28,428.59 : x
2. Step 2: Convert to fraction form
   52,301.86/72,177.05 = 28,428.59/x
3. Step 3: Cross multiply
   52,301.86x = 72,177.05 × 28,428.59
4. Step 4: Simplify right side
   52,301.86x = 2,051,891,761.86
5. Step 5: Solve for x
   x = 2,051,891,761.86/52,301.86
6. Step 6: Final answer
   x = 39,231.72