Finding the Fourth Proportional to 64,996.86, 89,696.27 and 38,139.83

Step by Step Solution

1. Step 1: Write the proportion equation
   64,996.86 : 89,696.27 = 38,139.83 : x
2. Step 2: Convert to fraction form
   64,996.86/89,696.27 = 38,139.83/x
3. Step 3: Cross multiply
   64,996.86x = 89,696.27 × 38,139.83
4. Step 4: Simplify right side
   64,996.86x = 3,421,000,472.66
5. Step 5: Solve for x
   x = 3,421,000,472.66/64,996.86
6. Step 6: Final answer
   x = 52,633.32