Finding the Fourth Proportional to 30,461.51, 42,038.52 and 18,365.87

Step by Step Solution

1. Step 1: Write the proportion equation
   30,461.51 : 42,038.52 = 18,365.87 : x
2. Step 2: Convert to fraction form
   30,461.51/42,038.52 = 18,365.87/x
3. Step 3: Cross multiply
   30,461.51x = 42,038.52 × 18,365.87
4. Step 4: Simplify right side
   30,461.51x = 772,073,993.31
5. Step 5: Solve for x
   x = 772,073,993.31/30,461.51
6. Step 6: Final answer
   x = 25,345.89