Finding the Fourth Proportional to 89,038.72, 133,465.82 and 55,682.20

Step by Step Solution

1. Step 1: Write the proportion equation
   89,038.72 : 133,465.82 = 55,682.20 : x
2. Step 2: Convert to fraction form
   89,038.72/133,465.82 = 55,682.20/x
3. Step 3: Cross multiply
   89,038.72x = 133,465.82 × 55,682.20
4. Step 4: Simplify right side
   89,038.72x = 7,431,670,482.40
5. Step 5: Solve for x
   x = 7,431,670,482.40/89,038.72
6. Step 6: Final answer
   x = 83,465.60