Finding the Fourth Proportional to 139,576.74, 208,419.66 and 110,790.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,576.74 : 208,419.66 = 110,790.72 : x
2. Step 2: Convert to fraction form
   139,576.74/208,419.66 = 110,790.72/x
3. Step 3: Cross multiply
   139,576.74x = 208,419.66 × 110,790.72
4. Step 4: Simplify right side
   139,576.74x = 23,090,964,193.56
5. Step 5: Solve for x
   x = 23,090,964,193.56/139,576.74
6. Step 6: Final answer
   x = 165,435.62