Finding the Fourth Proportional to 109,291.11, 163,977.98 and 42,778.77

Step by Step Solution

1. Step 1: Write the proportion equation
   109,291.11 : 163,977.98 = 42,778.77 : x
2. Step 2: Convert to fraction form
   109,291.11/163,977.98 = 42,778.77/x
3. Step 3: Cross multiply
   109,291.11x = 163,977.98 × 42,778.77
4. Step 4: Simplify right side
   109,291.11x = 7,014,776,077.59
5. Step 5: Solve for x
   x = 7,014,776,077.59/109,291.11
6. Step 6: Final answer
   x = 64,184.32