Finding the Fourth Proportional to 133,103.75, 183,661.50 and 78,648.34

Step by Step Solution

1. Step 1: Write the proportion equation
   133,103.75 : 183,661.50 = 78,648.34 : x
2. Step 2: Convert to fraction form
   133,103.75/183,661.50 = 78,648.34/x
3. Step 3: Cross multiply
   133,103.75x = 183,661.50 × 78,648.34
4. Step 4: Simplify right side
   133,103.75x = 14,444,672,096.91
5. Step 5: Solve for x
   x = 14,444,672,096.91/133,103.75
6. Step 6: Final answer
   x = 108,521.91