Finding the Fourth Proportional to 59,431.32, 89,182.62 and 21,985.02

Step by Step Solution

1. Step 1: Write the proportion equation
   59,431.32 : 89,182.62 = 21,985.02 : x
2. Step 2: Convert to fraction form
   59,431.32/89,182.62 = 21,985.02/x
3. Step 3: Cross multiply
   59,431.32x = 89,182.62 × 21,985.02
4. Step 4: Simplify right side
   59,431.32x = 1,960,681,684.35
5. Step 5: Solve for x
   x = 1,960,681,684.35/59,431.32
6. Step 6: Final answer
   x = 32,990.71