Finding the Fourth Proportional to 279,830.52, 386,156.34 and 152,503.56

Step by Step Solution

1. Step 1: Write the proportion equation
   279,830.52 : 386,156.34 = 152,503.56 : x
2. Step 2: Convert to fraction form
   279,830.52/386,156.34 = 152,503.56/x
3. Step 3: Cross multiply
   279,830.52x = 386,156.34 × 152,503.56
4. Step 4: Simplify right side
   279,830.52x = 58,890,216,566.57
5. Step 5: Solve for x
   x = 58,890,216,566.57/279,830.52
6. Step 6: Final answer
   x = 210,449.58