Finding the Fourth Proportional to 78,364.24, 108,142.65 and 42,554.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,364.24 : 108,142.65 = 42,554.25 : x
2. Step 2: Convert to fraction form
   78,364.24/108,142.65 = 42,554.25/x
3. Step 3: Cross multiply
   78,364.24x = 108,142.65 × 42,554.25
4. Step 4: Simplify right side
   78,364.24x = 4,601,929,363.76
5. Step 5: Solve for x
   x = 4,601,929,363.76/78,364.24
6. Step 6: Final answer
   x = 58,724.87