Finding the Fourth Proportional to 31,612.56, 47,130.72 and 30,804.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,612.56 : 47,130.72 = 30,804.72 : x
2. Step 2: Convert to fraction form
   31,612.56/47,130.72 = 30,804.72/x
3. Step 3: Cross multiply
   31,612.56x = 47,130.72 × 30,804.72
4. Step 4: Simplify right side
   31,612.56x = 1,451,848,633.00
5. Step 5: Solve for x
   x = 1,451,848,633.00/31,612.56
6. Step 6: Final answer
   x = 45,926.32