Finding the Fourth Proportional to 61,030.29, 91,087.89 and 57,044.46

Step by Step Solution

1. Step 1: Write the proportion equation
   61,030.29 : 91,087.89 = 57,044.46 : x
2. Step 2: Convert to fraction form
   61,030.29/91,087.89 = 57,044.46/x
3. Step 3: Cross multiply
   61,030.29x = 91,087.89 × 57,044.46
4. Step 4: Simplify right side
   61,030.29x = 5,196,059,497.59
5. Step 5: Solve for x
   x = 5,196,059,497.59/61,030.29
6. Step 6: Final answer
   x = 85,139.03