Finding the Fourth Proportional to 123,501.45, 170,429.78 and 69,785.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,501.45 : 170,429.78 = 69,785.31 : x
2. Step 2: Convert to fraction form
   123,501.45/170,429.78 = 69,785.31/x
3. Step 3: Cross multiply
   123,501.45x = 170,429.78 × 69,785.31
4. Step 4: Simplify right side
   123,501.45x = 11,893,495,844.11
5. Step 5: Solve for x
   x = 11,893,495,844.11/123,501.45
6. Step 6: Final answer
   x = 96,302.48