Finding the Fourth Proportional to 186,667.32, 257,518.90 and 126,216.12

Step by Step Solution

1. Step 1: Write the proportion equation
   186,667.32 : 257,518.90 = 126,216.12 : x
2. Step 2: Convert to fraction form
   186,667.32/257,518.90 = 126,216.12/x
3. Step 3: Cross multiply
   186,667.32x = 257,518.90 × 126,216.12
4. Step 4: Simplify right side
   186,667.32x = 32,503,036,384.67
5. Step 5: Solve for x
   x = 32,503,036,384.67/186,667.32
6. Step 6: Final answer
   x = 174,122.80