Finding the Fourth Proportional to 101,850.81, 140,554.17 and 56,528.81

Step by Step Solution

1. Step 1: Write the proportion equation
   101,850.81 : 140,554.17 = 56,528.81 : x
2. Step 2: Convert to fraction form
   101,850.81/140,554.17 = 56,528.81/x
3. Step 3: Cross multiply
   101,850.81x = 140,554.17 × 56,528.81
4. Step 4: Simplify right side
   101,850.81x = 7,945,360,322.02
5. Step 5: Solve for x
   x = 7,945,360,322.02/101,850.81
6. Step 6: Final answer
   x = 78,009.79