Finding the Fourth Proportional to 133,118.86, 199,505.94 and 54,141.34

Step by Step Solution

1. Step 1: Write the proportion equation
   133,118.86 : 199,505.94 = 54,141.34 : x
2. Step 2: Convert to fraction form
   133,118.86/199,505.94 = 54,141.34/x
3. Step 3: Cross multiply
   133,118.86x = 199,505.94 × 54,141.34
4. Step 4: Simplify right side
   133,118.86x = 10,801,518,929.56
5. Step 5: Solve for x
   x = 10,801,518,929.56/133,118.86
6. Step 6: Final answer
   x = 81,141.91