Finding the Fourth Proportional to 139,126.56, 191,785.29 and 108,859.29

Step by Step Solution

1. Step 1: Write the proportion equation
   139,126.56 : 191,785.29 = 108,859.29 : x
2. Step 2: Convert to fraction form
   139,126.56/191,785.29 = 108,859.29/x
3. Step 3: Cross multiply
   139,126.56x = 191,785.29 × 108,859.29
4. Step 4: Simplify right side
   139,126.56x = 20,877,610,501.84
5. Step 5: Solve for x
   x = 20,877,610,501.84/139,126.56
6. Step 6: Final answer
   x = 150,062.00