Finding the Fourth Proportional to 78,081.66, 107,753.24 and 42,271.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.66 : 107,753.24 = 42,271.76 : x
2. Step 2: Convert to fraction form
   78,081.66/107,753.24 = 42,271.76/x
3. Step 3: Cross multiply
   78,081.66x = 107,753.24 × 42,271.76
4. Step 4: Simplify right side
   78,081.66x = 4,554,919,475.56
5. Step 5: Solve for x
   x = 4,554,919,475.56/78,081.66
6. Step 6: Final answer
   x = 58,335.33