Finding the Fourth Proportional to 172,488.42, 258,445.56 and 60,106.70

Step by Step Solution

1. Step 1: Write the proportion equation
   172,488.42 : 258,445.56 = 60,106.70 : x
2. Step 2: Convert to fraction form
   172,488.42/258,445.56 = 60,106.70/x
3. Step 3: Cross multiply
   172,488.42x = 258,445.56 × 60,106.70
4. Step 4: Simplify right side
   172,488.42x = 15,534,308,449.02
5. Step 5: Solve for x
   x = 15,534,308,449.02/172,488.42
6. Step 6: Final answer
   x = 90,060.01