Finding the Fourth Proportional to 279,522.90, 419,155.29 and 89,947.98

Step by Step Solution

1. Step 1: Write the proportion equation
   279,522.90 : 419,155.29 = 89,947.98 : x
2. Step 2: Convert to fraction form
   279,522.90/419,155.29 = 89,947.98/x
3. Step 3: Cross multiply
   279,522.90x = 419,155.29 × 89,947.98
4. Step 4: Simplify right side
   279,522.90x = 37,702,171,641.81
5. Step 5: Solve for x
   x = 37,702,171,641.81/279,522.90
6. Step 6: Final answer
   x = 134,880.44