Finding the Fourth Proportional to 101,025.63, 139,388.03 and 57,417.57

Step by Step Solution

1. Step 1: Write the proportion equation
   101,025.63 : 139,388.03 = 57,417.57 : x
2. Step 2: Convert to fraction form
   101,025.63/139,388.03 = 57,417.57/x
3. Step 3: Cross multiply
   101,025.63x = 139,388.03 × 57,417.57
4. Step 4: Simplify right side
   101,025.63x = 8,003,321,682.60
5. Step 5: Solve for x
   x = 8,003,321,682.60/101,025.63
6. Step 6: Final answer
   x = 79,220.71