Finding the Fourth Proportional to 279,435.88, 385,621.56 and 152,112.43

Step by Step Solution

1. Step 1: Write the proportion equation
   279,435.88 : 385,621.56 = 152,112.43 : x
2. Step 2: Convert to fraction form
   279,435.88/385,621.56 = 152,112.43/x
3. Step 3: Cross multiply
   279,435.88x = 385,621.56 × 152,112.43
4. Step 4: Simplify right side
   279,435.88x = 58,657,829,863.32
5. Step 5: Solve for x
   x = 58,657,829,863.32/279,435.88
6. Step 6: Final answer
   x = 209,915.17