Finding the Fourth Proportional to 109,574.20, 164,365.40 and 30,686.38

Step by Step Solution

1. Step 1: Write the proportion equation
   109,574.20 : 164,365.40 = 30,686.38 : x
2. Step 2: Convert to fraction form
   109,574.20/164,365.40 = 30,686.38/x
3. Step 3: Cross multiply
   109,574.20x = 164,365.40 × 30,686.38
4. Step 4: Simplify right side
   109,574.20x = 5,043,779,123.25
5. Step 5: Solve for x
   x = 5,043,779,123.25/109,574.20
6. Step 6: Final answer
   x = 46,030.72