Finding the Fourth Proportional to 87,434.69, 120,368.03 and 83,417.58

Step by Step Solution

1. Step 1: Write the proportion equation
   87,434.69 : 120,368.03 = 83,417.58 : x
2. Step 2: Convert to fraction form
   87,434.69/120,368.03 = 83,417.58/x
3. Step 3: Cross multiply
   87,434.69x = 120,368.03 × 83,417.58
4. Step 4: Simplify right side
   87,434.69x = 10,040,809,354.88
5. Step 5: Solve for x
   x = 10,040,809,354.88/87,434.69
6. Step 6: Final answer
   x = 114,837.83