Finding the Fourth Proportional to 59,436.32, 89,190.12 and 21,990.02

Step by Step Solution

1. Step 1: Write the proportion equation
   59,436.32 : 89,190.12 = 21,990.02 : x
2. Step 2: Convert to fraction form
   59,436.32/89,190.12 = 21,990.02/x
3. Step 3: Cross multiply
   59,436.32x = 89,190.12 × 21,990.02
4. Step 4: Simplify right side
   59,436.32x = 1,961,292,522.60
5. Step 5: Solve for x
   x = 1,961,292,522.60/59,436.32
6. Step 6: Final answer
   x = 32,998.22