Finding the Fourth Proportional to 42,689.47, 64,041.72 and 14,602.93

Step by Step Solution

1. Step 1: Write the proportion equation
   42,689.47 : 64,041.72 = 14,602.93 : x
2. Step 2: Convert to fraction form
   42,689.47/64,041.72 = 14,602.93/x
3. Step 3: Cross multiply
   42,689.47x = 64,041.72 × 14,602.93
4. Step 4: Simplify right side
   42,689.47x = 935,196,754.24
5. Step 5: Solve for x
   x = 935,196,754.24/42,689.47
6. Step 6: Final answer
   x = 21,906.97