Finding the Fourth Proportional to 109,511.32, 164,268.30 and 42,982.78

Step by Step Solution

1. Step 1: Write the proportion equation
   109,511.32 : 164,268.30 = 42,982.78 : x
2. Step 2: Convert to fraction form
   109,511.32/164,268.30 = 42,982.78/x
3. Step 3: Cross multiply
   109,511.32x = 164,268.30 × 42,982.78
4. Step 4: Simplify right side
   109,511.32x = 7,060,708,199.87
5. Step 5: Solve for x
   x = 7,060,708,199.87/109,511.32
6. Step 6: Final answer
   x = 64,474.69