Finding the Fourth Proportional to 42,790.52, 64,215.18 and 15,088.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,790.52 : 64,215.18 = 15,088.52 : x
2. Step 2: Convert to fraction form
   42,790.52/64,215.18 = 15,088.52/x
3. Step 3: Cross multiply
   42,790.52x = 64,215.18 × 15,088.52
4. Step 4: Simplify right side
   42,790.52x = 968,912,027.73
5. Step 5: Solve for x
   x = 968,912,027.73/42,790.52
6. Step 6: Final answer
   x = 22,643.15