Finding the Fourth Proportional to 72,529.02, 108,742.50 and 28,118.34

Step by Step Solution

1. Step 1: Write the proportion equation
   72,529.02 : 108,742.50 = 28,118.34 : x
2. Step 2: Convert to fraction form
   72,529.02/108,742.50 = 28,118.34/x
3. Step 3: Cross multiply
   72,529.02x = 108,742.50 × 28,118.34
4. Step 4: Simplify right side
   72,529.02x = 3,057,658,587.45
5. Step 5: Solve for x
   x = 3,057,658,587.45/72,529.02
6. Step 6: Final answer
   x = 42,157.73