Finding the Fourth Proportional to 89,483.36, 123,334.80 and 61,139.84

Step by Step Solution

1. Step 1: Write the proportion equation
   89,483.36 : 123,334.80 = 61,139.84 : x
2. Step 2: Convert to fraction form
   89,483.36/123,334.80 = 61,139.84/x
3. Step 3: Cross multiply
   89,483.36x = 123,334.80 × 61,139.84
4. Step 4: Simplify right side
   89,483.36x = 7,540,669,938.43
5. Step 5: Solve for x
   x = 7,540,669,938.43/89,483.36
6. Step 6: Final answer
   x = 84,268.96