Finding the Fourth Proportional to 139,284.52, 191,782.26 and 108,780.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,284.52 : 191,782.26 = 108,780.83 : x
2. Step 2: Convert to fraction form
   139,284.52/191,782.26 = 108,780.83/x
3. Step 3: Cross multiply
   139,284.52x = 191,782.26 × 108,780.83
4. Step 4: Simplify right side
   139,284.52x = 20,862,233,415.79
5. Step 5: Solve for x
   x = 20,862,233,415.79/139,284.52
6. Step 6: Final answer
   x = 149,781.42