Finding the Fourth Proportional to 124,906.89, 172,365.16 and 77,164.41

Step by Step Solution

1. Step 1: Write the proportion equation
   124,906.89 : 172,365.16 = 77,164.41 : x
2. Step 2: Convert to fraction form
   124,906.89/172,365.16 = 77,164.41/x
3. Step 3: Cross multiply
   124,906.89x = 172,365.16 × 77,164.41
4. Step 4: Simplify right side
   124,906.89x = 13,300,455,875.96
5. Step 5: Solve for x
   x = 13,300,455,875.96/124,906.89
6. Step 6: Final answer
   x = 106,482.96