Finding the Fourth Proportional to 92,824.03, 139,213.76 and 42,856.12

Step by Step Solution

1. Step 1: Write the proportion equation
   92,824.03 : 139,213.76 = 42,856.12 : x
2. Step 2: Convert to fraction form
   92,824.03/139,213.76 = 42,856.12/x
3. Step 3: Cross multiply
   92,824.03x = 139,213.76 × 42,856.12
4. Step 4: Simplify right side
   92,824.03x = 5,966,161,563.95
5. Step 5: Solve for x
   x = 5,966,161,563.95/92,824.03
6. Step 6: Final answer
   x = 64,273.89