Finding the Fourth Proportional to 185,389.68, 278,106.12 and 67,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   185,389.68 : 278,106.12 = 67,116.72 : x
2. Step 2: Convert to fraction form
   185,389.68/278,106.12 = 67,116.72/x
3. Step 3: Cross multiply
   185,389.68x = 278,106.12 × 67,116.72
4. Step 4: Simplify right side
   185,389.68x = 18,665,570,586.33
5. Step 5: Solve for x
   x = 18,665,570,586.33/185,389.68
6. Step 6: Final answer
   x = 100,682.90