Finding the Fourth Proportional to 72,485.73, 99,979.74 and 70,047.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72,485.73 : 99,979.74 = 70,047.27 : x
2. Step 2: Convert to fraction form
   72,485.73/99,979.74 = 70,047.27/x
3. Step 3: Cross multiply
   72,485.73x = 99,979.74 × 70,047.27
4. Step 4: Simplify right side
   72,485.73x = 7,003,307,842.31
5. Step 5: Solve for x
   x = 7,003,307,842.31/72,485.73
6. Step 6: Final answer
   x = 96,616.37