Finding the Fourth Proportional to 123,339.42, 170,196.57 and 97,907.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,339.42 : 170,196.57 = 97,907.31 : x
2. Step 2: Convert to fraction form
   123,339.42/170,196.57 = 97,907.31/x
3. Step 3: Cross multiply
   123,339.42x = 170,196.57 × 97,907.31
4. Step 4: Simplify right side
   123,339.42x = 16,663,488,339.93
5. Step 5: Solve for x
   x = 16,663,488,339.93/123,339.42
6. Step 6: Final answer
   x = 135,102.70