Finding the Fourth Proportional to 72,357.96, 99,853.11 and 42,148.20

Step by Step Solution

1. Step 1: Write the proportion equation
   72,357.96 : 99,853.11 = 42,148.20 : x
2. Step 2: Convert to fraction form
   72,357.96/99,853.11 = 42,148.20/x
3. Step 3: Cross multiply
   72,357.96x = 99,853.11 × 42,148.20
4. Step 4: Simplify right side
   72,357.96x = 4,208,628,850.90
5. Step 5: Solve for x
   x = 4,208,628,850.90/72,357.96
6. Step 6: Final answer
   x = 58,164.01