Finding the Fourth Proportional to 78,606.48, 108,479.28 and 42,798.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,606.48 : 108,479.28 = 42,798.88 : x
2. Step 2: Convert to fraction form
   78,606.48/108,479.28 = 42,798.88/x
3. Step 3: Cross multiply
   78,606.48x = 108,479.28 × 42,798.88
4. Step 4: Simplify right side
   78,606.48x = 4,642,791,687.21
5. Step 5: Solve for x
   x = 4,642,791,687.21/78,606.48
6. Step 6: Final answer
   x = 59,063.73