Finding the Fourth Proportional to 89,484.36, 123,336.18 and 61,140.84

Step by Step Solution

1. Step 1: Write the proportion equation
   89,484.36 : 123,336.18 = 61,140.84 : x
2. Step 2: Convert to fraction form
   89,484.36/123,336.18 = 61,140.84/x
3. Step 3: Cross multiply
   89,484.36x = 123,336.18 × 61,140.84
4. Step 4: Simplify right side
   89,484.36x = 7,540,877,647.59
5. Step 5: Solve for x
   x = 7,540,877,647.59/89,484.36
6. Step 6: Final answer
   x = 84,270.34