Finding the Fourth Proportional to 109,856.03, 164,790.47 and 42,388.43

Step by Step Solution

1. Step 1: Write the proportion equation
   109,856.03 : 164,790.47 = 42,388.43 : x
2. Step 2: Convert to fraction form
   109,856.03/164,790.47 = 42,388.43/x
3. Step 3: Cross multiply
   109,856.03x = 164,790.47 × 42,388.43
4. Step 4: Simplify right side
   109,856.03x = 6,985,208,667.00
5. Step 5: Solve for x
   x = 6,985,208,667.00/109,856.03
6. Step 6: Final answer
   x = 63,585.12