Finding the Fourth Proportional to 123,091.58, 169,861.56 and 69,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   123,091.58 : 169,861.56 = 69,387.50 : x
2. Step 2: Convert to fraction form
   123,091.58/169,861.56 = 69,387.50/x
3. Step 3: Cross multiply
   123,091.58x = 169,861.56 × 69,387.50
4. Step 4: Simplify right side
   123,091.58x = 11,786,268,994.50
5. Step 5: Solve for x
   x = 11,786,268,994.50/123,091.58
6. Step 6: Final answer
   x = 95,752.03