Finding the Fourth Proportional to 90,719.19, 136,140.71 and 31,554.27

Step by Step Solution

1. Step 1: Write the proportion equation
   90,719.19 : 136,140.71 = 31,554.27 : x
2. Step 2: Convert to fraction form
   90,719.19/136,140.71 = 31,554.27/x
3. Step 3: Cross multiply
   90,719.19x = 136,140.71 × 31,554.27
4. Step 4: Simplify right side
   90,719.19x = 4,295,820,563.56
5. Step 5: Solve for x
   x = 4,295,820,563.56/90,719.19
6. Step 6: Final answer
   x = 47,352.94