Finding the Fourth Proportional to 186,978.50, 257,899.39 and 126,522.53

Step by Step Solution

1. Step 1: Write the proportion equation
   186,978.50 : 257,899.39 = 126,522.53 : x
2. Step 2: Convert to fraction form
   186,978.50/257,899.39 = 126,522.53/x
3. Step 3: Cross multiply
   186,978.50x = 257,899.39 × 126,522.53
4. Step 4: Simplify right side
   186,978.50x = 32,630,082,675.64
5. Step 5: Solve for x
   x = 32,630,082,675.64/186,978.50
6. Step 6: Final answer
   x = 174,512.48