Finding the Fourth Proportional to 78,277.20, 108,022.56 and 42,467.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,277.20 : 108,022.56 = 42,467.76 : x
2. Step 2: Convert to fraction form
   78,277.20/108,022.56 = 42,467.76/x
3. Step 3: Cross multiply
   78,277.20x = 108,022.56 × 42,467.76
4. Step 4: Simplify right side
   78,277.20x = 4,587,476,152.67
5. Step 5: Solve for x
   x = 4,587,476,152.67/78,277.20
6. Step 6: Final answer
   x = 58,605.52