Finding the Fourth Proportional to 172,389.95, 237,746.71 and 120,680.56

Step by Step Solution

1. Step 1: Write the proportion equation
   172,389.95 : 237,746.71 = 120,680.56 : x
2. Step 2: Convert to fraction form
   172,389.95/237,746.71 = 120,680.56/x
3. Step 3: Cross multiply
   172,389.95x = 237,746.71 × 120,680.56
4. Step 4: Simplify right side
   172,389.95x = 28,691,406,100.96
5. Step 5: Solve for x
   x = 28,691,406,100.96/172,389.95
6. Step 6: Final answer
   x = 166,433.17