Finding the Fourth Proportional to 72,404.19, 99,913.68 and 42,194.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72,404.19 : 99,913.68 = 42,194.43 : x
2. Step 2: Convert to fraction form
   72,404.19/99,913.68 = 42,194.43/x
3. Step 3: Cross multiply
   72,404.19x = 99,913.68 × 42,194.43
4. Step 4: Simplify right side
   72,404.19x = 4,215,800,776.80
5. Step 5: Solve for x
   x = 4,215,800,776.80/72,404.19
6. Step 6: Final answer
   x = 58,225.92