Finding the Fourth Proportional to 146,070.78, 219,168.72 and 46,239.10

Step by Step Solution

1. Step 1: Write the proportion equation
   146,070.78 : 219,168.72 = 46,239.10 : x
2. Step 2: Convert to fraction form
   146,070.78/219,168.72 = 46,239.10/x
3. Step 3: Cross multiply
   146,070.78x = 219,168.72 × 46,239.10
4. Step 4: Simplify right side
   146,070.78x = 10,134,164,360.95
5. Step 5: Solve for x
   x = 10,134,164,360.95/146,070.78
6. Step 6: Final answer
   x = 69,378.45