Finding the Fourth Proportional to 172,061.42, 257,676.84 and 103,475.74

Step by Step Solution

1. Step 1: Write the proportion equation
   172,061.42 : 257,676.84 = 103,475.74 : x
2. Step 2: Convert to fraction form
   172,061.42/257,676.84 = 103,475.74/x
3. Step 3: Cross multiply
   172,061.42x = 257,676.84 × 103,475.74
4. Step 4: Simplify right side
   172,061.42x = 26,663,301,055.67
5. Step 5: Solve for x
   x = 26,663,301,055.67/172,061.42
6. Step 6: Final answer
   x = 154,963.85