Finding the Fourth Proportional to 86,546.34, 129,835.31 and 39,798

Step by Step Solution

1. Step 1: Write the proportion equation
   86,546.34 : 129,835.31 = 39,798 : x
2. Step 2: Convert to fraction form
   86,546.34/129,835.31 = 39,798/x
3. Step 3: Cross multiply
   86,546.34x = 129,835.31 × 39,798
4. Step 4: Simplify right side
   86,546.34x = 5,167,185,667.38
5. Step 5: Solve for x
   x = 5,167,185,667.38/86,546.34
6. Step 6: Final answer
   x = 59,704.27