Finding the Fourth Proportional to 172,978.55, 259,448.51 and 46,631.37

Step by Step Solution

1. Step 1: Write the proportion equation
   172,978.55 : 259,448.51 = 46,631.37 : x
2. Step 2: Convert to fraction form
   172,978.55/259,448.51 = 46,631.37/x
3. Step 3: Cross multiply
   172,978.55x = 259,448.51 × 46,631.37
4. Step 4: Simplify right side
   172,978.55x = 12,098,439,582.34
5. Step 5: Solve for x
   x = 12,098,439,582.34/172,978.55
6. Step 6: Final answer
   x = 69,941.85