Finding the Fourth Proportional to 77,979.31, 117,176.73 and 42,466.98

Step by Step Solution

1. Step 1: Write the proportion equation
   77,979.31 : 117,176.73 = 42,466.98 : x
2. Step 2: Convert to fraction form
   77,979.31/117,176.73 = 42,466.98/x
3. Step 3: Cross multiply
   77,979.31x = 117,176.73 × 42,466.98
4. Step 4: Simplify right side
   77,979.31x = 4,976,142,129.54
5. Step 5: Solve for x
   x = 4,976,142,129.54/77,979.31
6. Step 6: Final answer
   x = 63,813.62