Finding the Fourth Proportional to 173,990.61, 261,018.72 and 55,630.17

Step by Step Solution

1. Step 1: Write the proportion equation
   173,990.61 : 261,018.72 = 55,630.17 : x
2. Step 2: Convert to fraction form
   173,990.61/261,018.72 = 55,630.17/x
3. Step 3: Cross multiply
   173,990.61x = 261,018.72 × 55,630.17
4. Step 4: Simplify right side
   173,990.61x = 14,520,515,766.78
5. Step 5: Solve for x
   x = 14,520,515,766.78/173,990.61
6. Step 6: Final answer
   x = 83,455.74