Finding the Fourth Proportional to 250,219.01, 375,377.56 and 81,694.10

Step by Step Solution

1. Step 1: Write the proportion equation
   250,219.01 : 375,377.56 = 81,694.10 : x
2. Step 2: Convert to fraction form
   250,219.01/375,377.56 = 81,694.10/x
3. Step 3: Cross multiply
   250,219.01x = 375,377.56 × 81,694.10
4. Step 4: Simplify right side
   250,219.01x = 30,666,132,658.60
5. Step 5: Solve for x
   x = 30,666,132,658.60/250,219.01
6. Step 6: Final answer
   x = 122,557.16