Finding the Fourth Proportional to 31,800.70, 43,796.19 and 31,111.93

Step by Step Solution

1. Step 1: Write the proportion equation
   31,800.70 : 43,796.19 = 31,111.93 : x
2. Step 2: Convert to fraction form
   31,800.70/43,796.19 = 31,111.93/x
3. Step 3: Cross multiply
   31,800.70x = 43,796.19 × 31,111.93
4. Step 4: Simplify right side
   31,800.70x = 1,362,583,997.55
5. Step 5: Solve for x
   x = 1,362,583,997.55/31,800.70
6. Step 6: Final answer
   x = 42,847.61