Finding the Fourth Proportional to 78,705.56, 108,653.82 and 53,345.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705.56 : 108,653.82 = 53,345.96 : x
2. Step 2: Convert to fraction form
   78,705.56/108,653.82 = 53,345.96/x
3. Step 3: Cross multiply
   78,705.56x = 108,653.82 × 53,345.96
4. Step 4: Simplify right side
   78,705.56x = 5,796,242,335.57
5. Step 5: Solve for x
   x = 5,796,242,335.57/78,705.56
6. Step 6: Final answer
   x = 73,644.64