Finding the Fourth Proportional to 71,982, 99,335.16 and 42,174

Step by Step Solution

1. Step 1: Write the proportion equation
   71,982 : 99,335.16 = 42,174 : x
2. Step 2: Convert to fraction form
   71,982/99,335.16 = 42,174/x
3. Step 3: Cross multiply
   71,982x = 99,335.16 × 42,174
4. Step 4: Simplify right side
   71,982x = 4,189,361,037.84
5. Step 5: Solve for x
   x = 4,189,361,037.84/71,982
6. Step 6: Final answer
   x = 58,200.12