Finding the Fourth Proportional to 108,781, 150,117.83 and 66,348.34

Step by Step Solution

1. Step 1: Write the proportion equation
   108,781 : 150,117.83 = 66,348.34 : x
2. Step 2: Convert to fraction form
   108,781/150,117.83 = 66,348.34/x
3. Step 3: Cross multiply
   108,781x = 150,117.83 × 66,348.34
4. Step 4: Simplify right side
   108,781x = 9,960,068,824.90
5. Step 5: Solve for x
   x = 9,960,068,824.90/108,781
6. Step 6: Final answer
   x = 91,560.74