Finding the Fourth Proportional to 42,985.60, 59,322.72 and 26,218.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,985.60 : 59,322.72 = 26,218.72 : x
2. Step 2: Convert to fraction form
   42,985.60/59,322.72 = 26,218.72/x
3. Step 3: Cross multiply
   42,985.60x = 59,322.72 × 26,218.72
4. Step 4: Simplify right side
   42,985.60x = 1,555,365,785.32
5. Step 5: Solve for x
   x = 1,555,365,785.32/42,985.60
6. Step 6: Final answer
   x = 36,183.41