Finding the Fourth Proportional to 123,897.20, 170,978.34 and 67,308.62

Step by Step Solution

1. Step 1: Write the proportion equation
   123,897.20 : 170,978.34 = 67,308.62 : x
2. Step 2: Convert to fraction form
   123,897.20/170,978.34 = 67,308.62/x
3. Step 3: Cross multiply
   123,897.20x = 170,978.34 × 67,308.62
4. Step 4: Simplify right side
   123,897.20x = 11,508,316,115.29
5. Step 5: Solve for x
   x = 11,508,316,115.29/123,897.20
6. Step 6: Final answer
   x = 92,886.01