Finding the Fourth Proportional to 42,445, 63,671.55 and 17,486.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,445 : 63,671.55 = 17,486.74 : x
2. Step 2: Convert to fraction form
   42,445/63,671.55 = 17,486.74/x
3. Step 3: Cross multiply
   42,445x = 63,671.55 × 17,486.74
4. Step 4: Simplify right side
   42,445x = 1,113,407,840.25
5. Step 5: Solve for x
   x = 1,113,407,840.25/42,445
6. Step 6: Final answer
   x = 26,231.78