Finding the Fourth Proportional to 123,518.30, 185,136.31 and 56,101.74

Step by Step Solution

1. Step 1: Write the proportion equation
   123,518.30 : 185,136.31 = 56,101.74 : x
2. Step 2: Convert to fraction form
   123,518.30/185,136.31 = 56,101.74/x
3. Step 3: Cross multiply
   123,518.30x = 185,136.31 × 56,101.74
4. Step 4: Simplify right side
   123,518.30x = 10,386,469,128.18
5. Step 5: Solve for x
   x = 10,386,469,128.18/123,518.30
6. Step 6: Final answer
   x = 84,088.50