Finding the Fourth Proportional to 72,243.15, 99,715.58 and 42,034.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72,243.15 : 99,715.58 = 42,034.31 : x
2. Step 2: Convert to fraction form
   72,243.15/99,715.58 = 42,034.31/x
3. Step 3: Cross multiply
   72,243.15x = 99,715.58 × 42,034.31
4. Step 4: Simplify right side
   72,243.15x = 4,191,475,601.55
5. Step 5: Solve for x
   x = 4,191,475,601.55/72,243.15
6. Step 6: Final answer
   x = 58,019.00