Finding the Fourth Proportional to 78,369.32, 108,149.28 and 42,559.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,369.32 : 108,149.28 = 42,559.32 : x
2. Step 2: Convert to fraction form
   78,369.32/108,149.28 = 42,559.32/x
3. Step 3: Cross multiply
   78,369.32x = 108,149.28 × 42,559.32
4. Step 4: Simplify right side
   78,369.32x = 4,602,760,061.25
5. Step 5: Solve for x
   x = 4,602,760,061.25/78,369.32
6. Step 6: Final answer
   x = 58,731.66