Finding the Fourth Proportional to 123,914.58, 171,080.01 and 81,545.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,914.58 : 171,080.01 = 81,545.10 : x
2. Step 2: Convert to fraction form
   123,914.58/171,080.01 = 81,545.10/x
3. Step 3: Cross multiply
   123,914.58x = 171,080.01 × 81,545.10
4. Step 4: Simplify right side
   123,914.58x = 13,950,736,523.45
5. Step 5: Solve for x
   x = 13,950,736,523.45/123,914.58
6. Step 6: Final answer
   x = 112,583.50