Finding the Fourth Proportional to 105,311.55, 157,967.33 and 69,882.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,311.55 : 157,967.33 = 69,882.15 : x
2. Step 2: Convert to fraction form
   105,311.55/157,967.33 = 69,882.15/x
3. Step 3: Cross multiply
   105,311.55x = 157,967.33 × 69,882.15
4. Step 4: Simplify right side
   105,311.55x = 11,039,096,300.75
5. Step 5: Solve for x
   x = 11,039,096,300.75/105,311.55
6. Step 6: Final answer
   x = 104,823.23