Finding the Fourth Proportional to 133,103.69, 183,661.42 and 78,648.28

Step by Step Solution

1. Step 1: Write the proportion equation
   133,103.69 : 183,661.42 = 78,648.28 : x
2. Step 2: Convert to fraction form
   133,103.69/183,661.42 = 78,648.28/x
3. Step 3: Cross multiply
   133,103.69x = 183,661.42 × 78,648.28
4. Step 4: Simplify right side
   133,103.69x = 14,444,654,392.12
5. Step 5: Solve for x
   x = 14,444,654,392.12/133,103.69
6. Step 6: Final answer
   x = 108,521.82