Finding the Fourth Proportional to 78,248.52, 107,984.34 and 42,439.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,248.52 : 107,984.34 = 42,439.72 : x
2. Step 2: Convert to fraction form
   78,248.52/107,984.34 = 42,439.72/x
3. Step 3: Cross multiply
   78,248.52x = 107,984.34 × 42,439.72
4. Step 4: Simplify right side
   78,248.52x = 4,582,825,153.98
5. Step 5: Solve for x
   x = 4,582,825,153.98/78,248.52
6. Step 6: Final answer
   x = 58,567.56