Finding the Fourth Proportional to 277,404.08, 415,738.24 and 142,462.70

Step by Step Solution

1. Step 1: Write the proportion equation
   277,404.08 : 415,738.24 = 142,462.70 : x
2. Step 2: Convert to fraction form
   277,404.08/415,738.24 = 142,462.70/x
3. Step 3: Cross multiply
   277,404.08x = 415,738.24 × 142,462.70
4. Step 4: Simplify right side
   277,404.08x = 59,227,191,287.82
5. Step 5: Solve for x
   x = 59,227,191,287.82/277,404.08
6. Step 6: Final answer
   x = 213,505.12