Finding the Fourth Proportional to 86,662.59, 119,553 and 54,381.12

Step by Step Solution

1. Step 1: Write the proportion equation
   86,662.59 : 119,553 = 54,381.12 : x
2. Step 2: Convert to fraction form
   86,662.59/119,553 = 54,381.12/x
3. Step 3: Cross multiply
   86,662.59x = 119,553 × 54,381.12
4. Step 4: Simplify right side
   86,662.59x = 6,501,426,039.36
5. Step 5: Solve for x
   x = 6,501,426,039.36/86,662.59
6. Step 6: Final answer
   x = 75,019.98