Finding the Fourth Proportional to 101,467.79, 140,025.71 and 56,147.68

Step by Step Solution

1. Step 1: Write the proportion equation
   101,467.79 : 140,025.71 = 56,147.68 : x
2. Step 2: Convert to fraction form
   101,467.79/140,025.71 = 56,147.68/x
3. Step 3: Cross multiply
   101,467.79x = 140,025.71 × 56,147.68
4. Step 4: Simplify right side
   101,467.79x = 7,862,119,072.25
5. Step 5: Solve for x
   x = 7,862,119,072.25/101,467.79
6. Step 6: Final answer
   x = 77,483.89