Finding the Fourth Proportional to 42,288.46, 63,426.08 and 18,590.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,288.46 : 63,426.08 = 18,590.76 : x
2. Step 2: Convert to fraction form
   42,288.46/63,426.08 = 18,590.76/x
3. Step 3: Cross multiply
   42,288.46x = 63,426.08 × 18,590.76
4. Step 4: Simplify right side
   42,288.46x = 1,179,139,031.02
5. Step 5: Solve for x
   x = 1,179,139,031.02/42,288.46
6. Step 6: Final answer
   x = 27,883.23