Finding the Fourth Proportional to 64,780.38, 89,419.29 and 37,931.52

Step by Step Solution

1. Step 1: Write the proportion equation
   64,780.38 : 89,419.29 = 37,931.52 : x
2. Step 2: Convert to fraction form
   64,780.38/89,419.29 = 37,931.52/x
3. Step 3: Cross multiply
   64,780.38x = 89,419.29 × 37,931.52
4. Step 4: Simplify right side
   64,780.38x = 3,391,809,139.92
5. Step 5: Solve for x
   x = 3,391,809,139.92/64,780.38
6. Step 6: Final answer
   x = 52,358.59