Finding the Fourth Proportional to 89,463.72, 123,429.05 and 55,459.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89,463.72 : 123,429.05 = 55,459.75 : x
2. Step 2: Convert to fraction form
   89,463.72/123,429.05 = 55,459.75/x
3. Step 3: Cross multiply
   89,463.72x = 123,429.05 × 55,459.75
4. Step 4: Simplify right side
   89,463.72x = 6,845,343,361.29
5. Step 5: Solve for x
   x = 6,845,343,361.29/89,463.72
6. Step 6: Final answer
   x = 76,515.30