Finding the Fourth Proportional to 73,100.78, 109,659.54 and 39,869.48

Step by Step Solution

1. Step 1: Write the proportion equation
   73,100.78 : 109,659.54 = 39,869.48 : x
2. Step 2: Convert to fraction form
   73,100.78/109,659.54 = 39,869.48/x
3. Step 3: Cross multiply
   73,100.78x = 109,659.54 × 39,869.48
4. Step 4: Simplify right side
   73,100.78x = 4,372,068,836.84
5. Step 5: Solve for x
   x = 4,372,068,836.84/73,100.78
6. Step 6: Final answer
   x = 59,808.79