Finding the Fourth Proportional to 89,073.56, 122,921.57 and 48,787.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,073.56 : 122,921.57 = 48,787.31 : x
2. Step 2: Convert to fraction form
   89,073.56/122,921.57 = 48,787.31/x
3. Step 3: Cross multiply
   89,073.56x = 122,921.57 × 48,787.31
4. Step 4: Simplify right side
   89,073.56x = 5,997,012,741.28
5. Step 5: Solve for x
   x = 5,997,012,741.28/89,073.56
6. Step 6: Final answer
   x = 67,326.52