Finding the Fourth Proportional to 139,898.88, 193,133.52 and 108,785.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,898.88 : 193,133.52 = 108,785.16 : x
2. Step 2: Convert to fraction form
   139,898.88/193,133.52 = 108,785.16/x
3. Step 3: Cross multiply
   139,898.88x = 193,133.52 × 108,785.16
4. Step 4: Simplify right side
   139,898.88x = 21,010,060,874.56
5. Step 5: Solve for x
   x = 21,010,060,874.56/139,898.88
6. Step 6: Final answer
   x = 150,180.34