Finding the Fourth Proportional to 78,151.78, 107,849.28 and 42,342.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,151.78 : 107,849.28 = 42,342.76 : x
2. Step 2: Convert to fraction form
   78,151.78/107,849.28 = 42,342.76/x
3. Step 3: Cross multiply
   78,151.78x = 107,849.28 × 42,342.76
4. Step 4: Simplify right side
   78,151.78x = 4,566,636,179.21
5. Step 5: Solve for x
   x = 4,566,636,179.21/78,151.78
6. Step 6: Final answer
   x = 58,432.91