Finding the Fourth Proportional to 101,730.53, 140,389.81 and 56,410.42

Step by Step Solution

1. Step 1: Write the proportion equation
   101,730.53 : 140,389.81 = 56,410.42 : x
2. Step 2: Convert to fraction form
   101,730.53/140,389.81 = 56,410.42/x
3. Step 3: Cross multiply
   101,730.53x = 140,389.81 × 56,410.42
4. Step 4: Simplify right side
   101,730.53x = 7,919,448,180.28
5. Step 5: Solve for x
   x = 7,919,448,180.28/101,730.53
6. Step 6: Final answer
   x = 77,847.31