Finding the Fourth Proportional to 108,994.78, 163,499.46 and 42,430.60

Step by Step Solution

1. Step 1: Write the proportion equation
   108,994.78 : 163,499.46 = 42,430.60 : x
2. Step 2: Convert to fraction form
   108,994.78/163,499.46 = 42,430.60/x
3. Step 3: Cross multiply
   108,994.78x = 163,499.46 × 42,430.60
4. Step 4: Simplify right side
   108,994.78x = 6,937,380,187.48
5. Step 5: Solve for x
   x = 6,937,380,187.48/108,994.78
6. Step 6: Final answer
   x = 63,648.74