Finding the Fourth Proportional to 278,477.46, 384,266.88 and 155,952.72

Step by Step Solution

1. Step 1: Write the proportion equation
   278,477.46 : 384,266.88 = 155,952.72 : x
2. Step 2: Convert to fraction form
   278,477.46/384,266.88 = 155,952.72/x
3. Step 3: Cross multiply
   278,477.46x = 384,266.88 × 155,952.72
4. Step 4: Simplify right side
   278,477.46x = 59,927,465,141.91
5. Step 5: Solve for x
   x = 59,927,465,141.91/278,477.46
6. Step 6: Final answer
   x = 215,196.82