Finding the Fourth Proportional to 478,698.72, 718,022.08 and 146,274.72

Step by Step Solution

1. Step 1: Write the proportion equation
   478,698.72 : 718,022.08 = 146,274.72 : x
2. Step 2: Convert to fraction form
   478,698.72/718,022.08 = 146,274.72/x
3. Step 3: Cross multiply
   478,698.72x = 718,022.08 × 146,274.72
4. Step 4: Simplify right side
   478,698.72x = 105,028,478,705.82
5. Step 5: Solve for x
   x = 105,028,478,705.82/478,698.72
6. Step 6: Final answer
   x = 219,404.14