Finding the Fourth Proportional to 78,320.77, 108,082.76 and 42,510.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,320.77 : 108,082.76 = 42,510.77 : x
2. Step 2: Convert to fraction form
   78,320.77/108,082.76 = 42,510.77/x
3. Step 3: Cross multiply
   78,320.77x = 108,082.76 × 42,510.77
4. Step 4: Simplify right side
   78,320.77x = 4,594,681,003.67
5. Step 5: Solve for x
   x = 4,594,681,003.67/78,320.77
6. Step 6: Final answer
   x = 58,664.91