Finding the Fourth Proportional to 172,861, 238,548.18 and 97,412.20

Step by Step Solution

1. Step 1: Write the proportion equation
   172,861 : 238,548.18 = 97,412.20 : x
2. Step 2: Convert to fraction form
   172,861/238,548.18 = 97,412.20/x
3. Step 3: Cross multiply
   172,861x = 238,548.18 × 97,412.20
4. Step 4: Simplify right side
   172,861x = 23,237,503,019.80
5. Step 5: Solve for x
   x = 23,237,503,019.80/172,861
6. Step 6: Final answer
   x = 134,428.84