Finding the Fourth Proportional to 109,870.10, 164,811.58 and 42,402.49

Step by Step Solution

1. Step 1: Write the proportion equation
   109,870.10 : 164,811.58 = 42,402.49 : x
2. Step 2: Convert to fraction form
   109,870.10/164,811.58 = 42,402.49/x
3. Step 3: Cross multiply
   109,870.10x = 164,811.58 × 42,402.49
4. Step 4: Simplify right side
   109,870.10x = 6,988,421,372.83
5. Step 5: Solve for x
   x = 6,988,421,372.83/109,870.10
6. Step 6: Final answer
   x = 63,606.22