Finding the Fourth Proportional to 123,640.31, 170,623.73 and 67,051.69

Step by Step Solution

1. Step 1: Write the proportion equation
   123,640.31 : 170,623.73 = 67,051.69 : x
2. Step 2: Convert to fraction form
   123,640.31/170,623.73 = 67,051.69/x
3. Step 3: Cross multiply
   123,640.31x = 170,623.73 × 67,051.69
4. Step 4: Simplify right side
   123,640.31x = 11,440,609,191.67
5. Step 5: Solve for x
   x = 11,440,609,191.67/123,640.31
6. Step 6: Final answer
   x = 92,531.38