Finding the Fourth Proportional to 42,789.14, 64,139.96 and 14,700.77

Step by Step Solution

1. Step 1: Write the proportion equation
   42,789.14 : 64,139.96 = 14,700.77 : x
2. Step 2: Convert to fraction form
   42,789.14/64,139.96 = 14,700.77/x
3. Step 3: Cross multiply
   42,789.14x = 64,139.96 × 14,700.77
4. Step 4: Simplify right side
   42,789.14x = 942,906,515.82
5. Step 5: Solve for x
   x = 942,906,515.82/42,789.14
6. Step 6: Final answer
   x = 22,036.12