Finding the Fourth Proportional to 279,123.42, 385,182.09 and 158,275.74

Step by Step Solution

1. Step 1: Write the proportion equation
   279,123.42 : 385,182.09 = 158,275.74 : x
2. Step 2: Convert to fraction form
   279,123.42/385,182.09 = 158,275.74/x
3. Step 3: Cross multiply
   279,123.42x = 385,182.09 × 158,275.74
4. Step 4: Simplify right side
   279,123.42x = 60,964,980,329.50
5. Step 5: Solve for x
   x = 60,964,980,329.50/279,123.42
6. Step 6: Final answer
   x = 218,415.85