Finding the Fourth Proportional to 231,026.27, 318,808.86 and 134,238.20

Step by Step Solution

1. Step 1: Write the proportion equation
   231,026.27 : 318,808.86 = 134,238.20 : x
2. Step 2: Convert to fraction form
   231,026.27/318,808.86 = 134,238.20/x
3. Step 3: Cross multiply
   231,026.27x = 318,808.86 × 134,238.20
4. Step 4: Simplify right side
   231,026.27x = 42,796,328,307.47
5. Step 5: Solve for x
   x = 42,796,328,307.47/231,026.27
6. Step 6: Final answer
   x = 185,244.43