Finding the Fourth Proportional to 64,780.61, 89,397.49 and 37,917.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,780.61 : 89,397.49 = 37,917.86 : x
2. Step 2: Convert to fraction form
   64,780.61/89,397.49 = 37,917.86/x
3. Step 3: Cross multiply
   64,780.61x = 89,397.49 × 37,917.86
4. Step 4: Simplify right side
   64,780.61x = 3,389,761,510.17
5. Step 5: Solve for x
   x = 3,389,761,510.17/64,780.61
6. Step 6: Final answer
   x = 52,326.79