Finding the Fourth Proportional to 112,362.88, 168,440.16 and 42,288.64

Step by Step Solution

1. Step 1: Write the proportion equation
   112,362.88 : 168,440.16 = 42,288.64 : x
2. Step 2: Convert to fraction form
   112,362.88/168,440.16 = 42,288.64/x
3. Step 3: Cross multiply
   112,362.88x = 168,440.16 × 42,288.64
4. Step 4: Simplify right side
   112,362.88x = 7,123,105,287.78
5. Step 5: Solve for x
   x = 7,123,105,287.78/112,362.88
6. Step 6: Final answer
   x = 63,393.76