Finding the Fourth Proportional to 31,720.56, 47,300.81 and 31,435.85

Step by Step Solution

1. Step 1: Write the proportion equation
   31,720.56 : 47,300.81 = 31,435.85 : x
2. Step 2: Convert to fraction form
   31,720.56/47,300.81 = 31,435.85/x
3. Step 3: Cross multiply
   31,720.56x = 47,300.81 × 31,435.85
4. Step 4: Simplify right side
   31,720.56x = 1,486,941,039.87
5. Step 5: Solve for x
   x = 1,486,941,039.87/31,720.56
6. Step 6: Final answer
   x = 46,876.25