Finding the Fourth Proportional to 277,401.86, 415,734.94 and 142,460.48

Step by Step Solution

1. Step 1: Write the proportion equation
   277,401.86 : 415,734.94 = 142,460.48 : x
2. Step 2: Convert to fraction form
   277,401.86/415,734.94 = 142,460.48/x
3. Step 3: Cross multiply
   277,401.86x = 415,734.94 × 142,460.48
4. Step 4: Simplify right side
   277,401.86x = 59,225,796,670.35
5. Step 5: Solve for x
   x = 59,225,796,670.35/277,401.86
6. Step 6: Final answer
   x = 213,501.80