Finding the Fourth Proportional to 93,320.40, 139,939.56 and 34,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   93,320.40 : 139,939.56 = 34,140.72 : x
2. Step 2: Convert to fraction form
   93,320.40/139,939.56 = 34,140.72/x
3. Step 3: Cross multiply
   93,320.40x = 139,939.56 × 34,140.72
4. Step 4: Simplify right side
   93,320.40x = 4,777,637,334.88
5. Step 5: Solve for x
   x = 4,777,637,334.88/93,320.40
6. Step 6: Final answer
   x = 51,196.07