Finding the Fourth Proportional to 123,559.30, 170,509.98 and 69,842.43

Step by Step Solution

1. Step 1: Write the proportion equation
   123,559.30 : 170,509.98 = 69,842.43 : x
2. Step 2: Convert to fraction form
   123,559.30/170,509.98 = 69,842.43/x
3. Step 3: Cross multiply
   123,559.30x = 170,509.98 × 69,842.43
4. Step 4: Simplify right side
   123,559.30x = 11,908,830,964.95
5. Step 5: Solve for x
   x = 11,908,830,964.95/123,559.30
6. Step 6: Final answer
   x = 96,381.50