Finding the Fourth Proportional to 139,285.27, 191,783.29 and 108,781.58

Step by Step Solution

1. Step 1: Write the proportion equation
   139,285.27 : 191,783.29 = 108,781.58 : x
2. Step 2: Convert to fraction form
   139,285.27/191,783.29 = 108,781.58/x
3. Step 3: Cross multiply
   139,285.27x = 191,783.29 × 108,781.58
4. Step 4: Simplify right side
   139,285.27x = 20,862,489,511.30
5. Step 5: Solve for x
   x = 20,862,489,511.30/139,285.27
6. Step 6: Final answer
   x = 149,782.46