Finding the Fourth Proportional to 42,095.90, 63,155.69 and 18,405.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,095.90 : 63,155.69 = 18,405.53 : x
2. Step 2: Convert to fraction form
   42,095.90/63,155.69 = 18,405.53/x
3. Step 3: Cross multiply
   42,095.90x = 63,155.69 × 18,405.53
4. Step 4: Simplify right side
   42,095.90x = 1,162,413,948.55
5. Step 5: Solve for x
   x = 1,162,413,948.55/42,095.90
6. Step 6: Final answer
   x = 27,613.47