Finding the Fourth Proportional to 91,559.52, 137,348.28 and 28,377

Step by Step Solution

1. Step 1: Write the proportion equation
   91,559.52 : 137,348.28 = 28,377 : x
2. Step 2: Convert to fraction form
   91,559.52/137,348.28 = 28,377/x
3. Step 3: Cross multiply
   91,559.52x = 137,348.28 × 28,377
4. Step 4: Simplify right side
   91,559.52x = 3,897,532,141.56
5. Step 5: Solve for x
   x = 3,897,532,141.56/91,559.52
6. Step 6: Final answer
   x = 42,568.29