Finding the Fourth Proportional to 99,478.49, 137,259.02 and 59,184.38

Step by Step Solution

1. Step 1: Write the proportion equation
   99,478.49 : 137,259.02 = 59,184.38 : x
2. Step 2: Convert to fraction form
   99,478.49/137,259.02 = 59,184.38/x
3. Step 3: Cross multiply
   99,478.49x = 137,259.02 × 59,184.38
4. Step 4: Simplify right side
   99,478.49x = 8,123,589,938.49
5. Step 5: Solve for x
   x = 8,123,589,938.49/99,478.49
6. Step 6: Final answer
   x = 81,661.78