Finding the Fourth Proportional to 78,052.56, 107,712.72 and 42,242.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,052.56 : 107,712.72 = 42,242.91 : x
2. Step 2: Convert to fraction form
   78,052.56/107,712.72 = 42,242.91/x
3. Step 3: Cross multiply
   78,052.56x = 107,712.72 × 42,242.91
4. Step 4: Simplify right side
   78,052.56x = 4,550,098,736.82
5. Step 5: Solve for x
   x = 4,550,098,736.82/78,052.56
6. Step 6: Final answer
   x = 58,295.32