Finding the Fourth Proportional to 123,926.18, 185,889.90 and 30,431.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123,926.18 : 185,889.90 = 30,431.96 : x
2. Step 2: Convert to fraction form
   123,926.18/185,889.90 = 30,431.96/x
3. Step 3: Cross multiply
   123,926.18x = 185,889.90 × 30,431.96
4. Step 4: Simplify right side
   123,926.18x = 5,656,994,001.20
5. Step 5: Solve for x
   x = 5,656,994,001.20/123,926.18
6. Step 6: Final answer
   x = 45,648.09