Finding the Fourth Proportional to 78,082.66, 107,754.62 and 42,272.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,082.66 : 107,754.62 = 42,272.76 : x
2. Step 2: Convert to fraction form
   78,082.66/107,754.62 = 42,272.76/x
3. Step 3: Cross multiply
   78,082.66x = 107,754.62 × 42,272.76
4. Step 4: Simplify right side
   78,082.66x = 4,555,085,190.15
5. Step 5: Solve for x
   x = 4,555,085,190.15/78,082.66
6. Step 6: Final answer
   x = 58,336.71