Finding the Fourth Proportional to 139,126.06, 191,784.61 and 108,858.79

Step by Step Solution

1. Step 1: Write the proportion equation
   139,126.06 : 191,784.61 = 108,858.79 : x
2. Step 2: Convert to fraction form
   139,126.06/191,784.61 = 108,858.79/x
3. Step 3: Cross multiply
   139,126.06x = 191,784.61 × 108,858.79
4. Step 4: Simplify right side
   139,126.06x = 20,877,440,585.22
5. Step 5: Solve for x
   x = 20,877,440,585.22/139,126.06
6. Step 6: Final answer
   x = 150,061.32