Finding the Fourth Proportional to 124,844.78, 172,300.89 and 70,407.30

Step by Step Solution

1. Step 1: Write the proportion equation
   124,844.78 : 172,300.89 = 70,407.30 : x
2. Step 2: Convert to fraction form
   124,844.78/172,300.89 = 70,407.30/x
3. Step 3: Cross multiply
   124,844.78x = 172,300.89 × 70,407.30
4. Step 4: Simplify right side
   124,844.78x = 12,131,240,452.50
5. Step 5: Solve for x
   x = 12,131,240,452.50/124,844.78
6. Step 6: Final answer
   x = 97,170.59