Finding the Fourth Proportional to 31,719.16, 43,792.61 and 19,800.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,719.16 : 43,792.61 = 19,800.01 : x
2. Step 2: Convert to fraction form
   31,719.16/43,792.61 = 19,800.01/x
3. Step 3: Cross multiply
   31,719.16x = 43,792.61 × 19,800.01
4. Step 4: Simplify right side
   31,719.16x = 867,094,115.93
5. Step 5: Solve for x
   x = 867,094,115.93/31,719.16
6. Step 6: Final answer
   x = 27,336.60