Finding the Fourth Proportional to 172,117.10, 257,801.78 and 83,184.10

Step by Step Solution

1. Step 1: Write the proportion equation
   172,117.10 : 257,801.78 = 83,184.10 : x
2. Step 2: Convert to fraction form
   172,117.10/257,801.78 = 83,184.10/x
3. Step 3: Cross multiply
   172,117.10x = 257,801.78 × 83,184.10
4. Step 4: Simplify right side
   172,117.10x = 21,445,009,047.70
5. Step 5: Solve for x
   x = 21,445,009,047.70/172,117.10
6. Step 6: Final answer
   x = 124,595.46