Finding the Fourth Proportional to 78,115.56, 107,798.89 and 42,304.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,115.56 : 107,798.89 = 42,304.74 : x
2. Step 2: Convert to fraction form
   78,115.56/107,798.89 = 42,304.74/x
3. Step 3: Cross multiply
   78,115.56x = 107,798.89 × 42,304.74
4. Step 4: Simplify right side
   78,115.56x = 4,560,404,013.74
5. Step 5: Solve for x
   x = 4,560,404,013.74/78,115.56
6. Step 6: Final answer
   x = 58,380.23