Finding the Fourth Proportional to 72,153.76, 108,204.69 and 42,178.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72,153.76 : 108,204.69 = 42,178.24 : x
2. Step 2: Convert to fraction form
   72,153.76/108,204.69 = 42,178.24/x
3. Step 3: Cross multiply
   72,153.76x = 108,204.69 × 42,178.24
4. Step 4: Simplify right side
   72,153.76x = 4,563,883,383.95
5. Step 5: Solve for x
   x = 4,563,883,383.95/72,153.76
6. Step 6: Final answer
   x = 63,252.19