Finding the Fourth Proportional to 146,878.89, 219,976.59 and 142,838.28

Step by Step Solution

1. Step 1: Write the proportion equation
   146,878.89 : 219,976.59 = 142,838.28 : x
2. Step 2: Convert to fraction form
   146,878.89/219,976.59 = 142,838.28/x
3. Step 3: Cross multiply
   146,878.89x = 219,976.59 × 142,838.28
4. Step 4: Simplify right side
   146,878.89x = 31,421,077,755.87
5. Step 5: Solve for x
   x = 31,421,077,755.87/146,878.89
6. Step 6: Final answer
   x = 213,925.08