Finding the Fourth Proportional to 131,388.89, 181,289.54 and 83,624.81

Step by Step Solution

1. Step 1: Write the proportion equation
   131,388.89 : 181,289.54 = 83,624.81 : x
2. Step 2: Convert to fraction form
   131,388.89/181,289.54 = 83,624.81/x
3. Step 3: Cross multiply
   131,388.89x = 181,289.54 × 83,624.81
4. Step 4: Simplify right side
   131,388.89x = 15,160,302,640.10
5. Step 5: Solve for x
   x = 15,160,302,640.10/131,388.89
6. Step 6: Final answer
   x = 115,384.97