Finding the Fourth Proportional to 42,702.72, 64,009.50 and 14,614.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,702.72 : 64,009.50 = 14,614.50 : x
2. Step 2: Convert to fraction form
   42,702.72/64,009.50 = 14,614.50/x
3. Step 3: Cross multiply
   42,702.72x = 64,009.50 × 14,614.50
4. Step 4: Simplify right side
   42,702.72x = 935,466,837.75
5. Step 5: Solve for x
   x = 935,466,837.75/42,702.72
6. Step 6: Final answer
   x = 21,906.49