Finding the Fourth Proportional to 72,290.08, 99,757.12 and 42,076.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,290.08 : 99,757.12 = 42,076.32 : x
2. Step 2: Convert to fraction form
   72,290.08/99,757.12 = 42,076.32/x
3. Step 3: Cross multiply
   72,290.08x = 99,757.12 × 42,076.32
4. Step 4: Simplify right side
   72,290.08x = 4,197,412,503.40
5. Step 5: Solve for x
   x = 4,197,412,503.40/72,290.08
6. Step 6: Final answer
   x = 58,063.46