Finding the Fourth Proportional to 93,018.24, 139,523.67 and 39,688.20

Step by Step Solution

1. Step 1: Write the proportion equation
   93,018.24 : 139,523.67 = 39,688.20 : x
2. Step 2: Convert to fraction form
   93,018.24/139,523.67 = 39,688.20/x
3. Step 3: Cross multiply
   93,018.24x = 139,523.67 × 39,688.20
4. Step 4: Simplify right side
   93,018.24x = 5,537,443,319.69
5. Step 5: Solve for x
   x = 5,537,443,319.69/93,018.24
6. Step 6: Final answer
   x = 59,530.73