Finding the Fourth Proportional to 78,123.11, 107,802.18 and 43,661.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,123.11 : 107,802.18 = 43,661.48 : x
2. Step 2: Convert to fraction form
   78,123.11/107,802.18 = 43,661.48/x
3. Step 3: Cross multiply
   78,123.11x = 107,802.18 × 43,661.48
4. Step 4: Simplify right side
   78,123.11x = 4,706,802,187.02
5. Step 5: Solve for x
   x = 4,706,802,187.02/78,123.11
6. Step 6: Final answer
   x = 60,248.53