Finding the Fourth Proportional to 103,765.86, 143,065.89 and 67,899.06

Step by Step Solution

1. Step 1: Write the proportion equation
   103,765.86 : 143,065.89 = 67,899.06 : x
2. Step 2: Convert to fraction form
   103,765.86/143,065.89 = 67,899.06/x
3. Step 3: Cross multiply
   103,765.86x = 143,065.89 × 67,899.06
4. Step 4: Simplify right side
   103,765.86x = 9,714,039,449.06
5. Step 5: Solve for x
   x = 9,714,039,449.06/103,765.86
6. Step 6: Final answer
   x = 93,614.99