Finding the Fourth Proportional to 109,871.58, 164,814.29 and 42,435.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,871.58 : 164,814.29 = 42,435.78 : x
2. Step 2: Convert to fraction form
   109,871.58/164,814.29 = 42,435.78/x
3. Step 3: Cross multiply
   109,871.58x = 164,814.29 × 42,435.78
4. Step 4: Simplify right side
   109,871.58x = 6,994,022,951.30
5. Step 5: Solve for x
   x = 6,994,022,951.30/109,871.58
6. Step 6: Final answer
   x = 63,656.34