Finding the Fourth Proportional to 72,045, 99,433.62 and 42,237

Step by Step Solution

1. Step 1: Write the proportion equation
   72,045 : 99,433.62 = 42,237 : x
2. Step 2: Convert to fraction form
   72,045/99,433.62 = 42,237/x
3. Step 3: Cross multiply
   72,045x = 99,433.62 × 42,237
4. Step 4: Simplify right side
   72,045x = 4,199,777,807.94
5. Step 5: Solve for x
   x = 4,199,777,807.94/72,045
6. Step 6: Final answer
   x = 58,293.81