Finding the Fourth Proportional to 171,810, 257,719.86 and 47,151

Step by Step Solution

1. Step 1: Write the proportion equation
   171,810 : 257,719.86 = 47,151 : x
2. Step 2: Convert to fraction form
   171,810/257,719.86 = 47,151/x
3. Step 3: Cross multiply
   171,810x = 257,719.86 × 47,151
4. Step 4: Simplify right side
   171,810x = 12,151,749,118.86
5. Step 5: Solve for x
   x = 12,151,749,118.86/171,810
6. Step 6: Final answer
   x = 70,727.83