Finding the Fourth Proportional to 115,770.51, 159,610.15 and 83,478.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,770.51 : 159,610.15 = 83,478.10 : x
2. Step 2: Convert to fraction form
   115,770.51/159,610.15 = 83,478.10/x
3. Step 3: Cross multiply
   115,770.51x = 159,610.15 × 83,478.10
4. Step 4: Simplify right side
   115,770.51x = 13,323,952,062.72
5. Step 5: Solve for x
   x = 13,323,952,062.72/115,770.51
6. Step 6: Final answer
   x = 115,089.34