Finding the Fourth Proportional to 83,980.62, 115,884.61 and 51,710.09

Step by Step Solution

1. Step 1: Write the proportion equation
   83,980.62 : 115,884.61 = 51,710.09 : x
2. Step 2: Convert to fraction form
   83,980.62/115,884.61 = 51,710.09/x
3. Step 3: Cross multiply
   83,980.62x = 115,884.61 × 51,710.09
4. Step 4: Simplify right side
   83,980.62x = 5,992,402,904.02
5. Step 5: Solve for x
   x = 5,992,402,904.02/83,980.62
6. Step 6: Final answer
   x = 71,354.59