Finding the Fourth Proportional to 124,657.47, 173,188.61 and 123,162.78

Step by Step Solution

1. Step 1: Write the proportion equation
   124,657.47 : 173,188.61 = 123,162.78 : x
2. Step 2: Convert to fraction form
   124,657.47/173,188.61 = 123,162.78/x
3. Step 3: Cross multiply
   124,657.47x = 173,188.61 × 123,162.78
4. Step 4: Simplify right side
   124,657.47x = 21,330,390,056.12
5. Step 5: Solve for x
   x = 21,330,390,056.12/124,657.47
6. Step 6: Final answer
   x = 171,112.01