Finding the Fourth Proportional to 89,499.28, 123,478.27 and 55,495.53

Step by Step Solution

1. Step 1: Write the proportion equation
   89,499.28 : 123,478.27 = 55,495.53 : x
2. Step 2: Convert to fraction form
   89,499.28/123,478.27 = 55,495.53/x
3. Step 3: Cross multiply
   89,499.28x = 123,478.27 × 55,495.53
4. Step 4: Simplify right side
   89,499.28x = 6,852,492,037.13
5. Step 5: Solve for x
   x = 6,852,492,037.13/89,499.28
6. Step 6: Final answer
   x = 76,564.77