Finding the Fourth Proportional to 172,811.34, 238,510.17 and 137,272.59

Step by Step Solution

1. Step 1: Write the proportion equation
   172,811.34 : 238,510.17 = 137,272.59 : x
2. Step 2: Convert to fraction form
   172,811.34/238,510.17 = 137,272.59/x
3. Step 3: Cross multiply
   172,811.34x = 238,510.17 × 137,272.59
4. Step 4: Simplify right side
   172,811.34x = 32,740,908,777.24
5. Step 5: Solve for x
   x = 32,740,908,777.24/172,811.34
6. Step 6: Final answer
   x = 189,460.42