Finding the Fourth Proportional to 109,624.30, 164,372.64 and 42,986.32

Step by Step Solution

1. Step 1: Write the proportion equation
   109,624.30 : 164,372.64 = 42,986.32 : x
2. Step 2: Convert to fraction form
   109,624.30/164,372.64 = 42,986.32/x
3. Step 3: Cross multiply
   109,624.30x = 164,372.64 × 42,986.32
4. Step 4: Simplify right side
   109,624.30x = 7,065,774,902.28
5. Step 5: Solve for x
   x = 7,065,774,902.28/109,624.30
6. Step 6: Final answer
   x = 64,454.46