Finding the Fourth Proportional to 70,862, 97,789.56 and 39,030.80

Step by Step Solution

1. Step 1: Write the proportion equation
   70,862 : 97,789.56 = 39,030.80 : x
2. Step 2: Convert to fraction form
   70,862/97,789.56 = 39,030.80/x
3. Step 3: Cross multiply
   70,862x = 97,789.56 × 39,030.80
4. Step 4: Simplify right side
   70,862x = 3,816,804,758.45
5. Step 5: Solve for x
   x = 3,816,804,758.45/70,862
6. Step 6: Final answer
   x = 53,862.50