Finding the Fourth Proportional to 101,961.02, 140,728.72 and 56,654.58

Step by Step Solution

1. Step 1: Write the proportion equation
   101,961.02 : 140,728.72 = 56,654.58 : x
2. Step 2: Convert to fraction form
   101,961.02/140,728.72 = 56,654.58/x
3. Step 3: Cross multiply
   101,961.02x = 140,728.72 × 56,654.58
4. Step 4: Simplify right side
   101,961.02x = 7,972,926,383.90
5. Step 5: Solve for x
   x = 7,972,926,383.90/101,961.02
6. Step 6: Final answer
   x = 78,195.83