Finding the Fourth Proportional to 61,081.17, 91,632.69 and 31,491.06

Step by Step Solution

1. Step 1: Write the proportion equation
   61,081.17 : 91,632.69 = 31,491.06 : x
2. Step 2: Convert to fraction form
   61,081.17/91,632.69 = 31,491.06/x
3. Step 3: Cross multiply
   61,081.17x = 91,632.69 × 31,491.06
4. Step 4: Simplify right side
   61,081.17x = 2,885,610,538.75
5. Step 5: Solve for x
   x = 2,885,610,538.75/61,081.17
6. Step 6: Final answer
   x = 47,242.23