Finding the Fourth Proportional to 124,910.34, 172,377.63 and 68,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,910.34 : 172,377.63 = 68,320.50 : x
2. Step 2: Convert to fraction form
   124,910.34/172,377.63 = 68,320.50/x
3. Step 3: Cross multiply
   124,910.34x = 172,377.63 × 68,320.50
4. Step 4: Simplify right side
   124,910.34x = 11,776,925,870.42
5. Step 5: Solve for x
   x = 11,776,925,870.42/124,910.34
6. Step 6: Final answer
   x = 94,283.03