Finding the Fourth Proportional to 61,667.04, 91,959.09 and 61,105.72

Step by Step Solution

1. Step 1: Write the proportion equation
   61,667.04 : 91,959.09 = 61,105.72 : x
2. Step 2: Convert to fraction form
   61,667.04/91,959.09 = 61,105.72/x
3. Step 3: Cross multiply
   61,667.04x = 91,959.09 × 61,105.72
4. Step 4: Simplify right side
   61,667.04x = 5,619,226,404.99
5. Step 5: Solve for x
   x = 5,619,226,404.99/61,667.04
6. Step 6: Final answer
   x = 91,122.04