Finding the Fourth Proportional to 91,071.31, 136,622.76 and 27,889.94

Step by Step Solution

1. Step 1: Write the proportion equation
   91,071.31 : 136,622.76 = 27,889.94 : x
2. Step 2: Convert to fraction form
   91,071.31/136,622.76 = 27,889.94/x
3. Step 3: Cross multiply
   91,071.31x = 136,622.76 × 27,889.94
4. Step 4: Simplify right side
   91,071.31x = 3,810,400,579.03
5. Step 5: Solve for x
   x = 3,810,400,579.03/91,071.31
6. Step 6: Final answer
   x = 41,839.75