Finding the Fourth Proportional to 123,486.04, 170,348.10 and 78,087.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123,486.04 : 170,348.10 = 78,087.52 : x
2. Step 2: Convert to fraction form
   123,486.04/170,348.10 = 78,087.52/x
3. Step 3: Cross multiply
   123,486.04x = 170,348.10 × 78,087.52
4. Step 4: Simplify right side
   123,486.04x = 13,302,060,665.71
5. Step 5: Solve for x
   x = 13,302,060,665.71/123,486.04
6. Step 6: Final answer
   x = 107,721.17