Finding the Fourth Proportional to 78,479.94, 108,304.48 and 42,672.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,479.94 : 108,304.48 = 42,672.40 : x
2. Step 2: Convert to fraction form
   78,479.94/108,304.48 = 42,672.40/x
3. Step 3: Cross multiply
   78,479.94x = 108,304.48 × 42,672.40
4. Step 4: Simplify right side
   78,479.94x = 4,621,612,092.35
5. Step 5: Solve for x
   x = 4,621,612,092.35/78,479.94
6. Step 6: Final answer
   x = 58,889.09