Finding the Fourth Proportional to 52,899.21, 72,989.51 and 30,530.25

Step by Step Solution

1. Step 1: Write the proportion equation
   52,899.21 : 72,989.51 = 30,530.25 : x
2. Step 2: Convert to fraction form
   52,899.21/72,989.51 = 30,530.25/x
3. Step 3: Cross multiply
   52,899.21x = 72,989.51 × 30,530.25
4. Step 4: Simplify right side
   52,899.21x = 2,228,387,835.03
5. Step 5: Solve for x
   x = 2,228,387,835.03/52,899.21
6. Step 6: Final answer
   x = 42,125.16