Finding the Fourth Proportional to 109,515.76, 164,273.16 and 42,908.85

Step by Step Solution

1. Step 1: Write the proportion equation
   109,515.76 : 164,273.16 = 42,908.85 : x
2. Step 2: Convert to fraction form
   109,515.76/164,273.16 = 42,908.85/x
3. Step 3: Cross multiply
   109,515.76x = 164,273.16 × 42,908.85
4. Step 4: Simplify right side
   109,515.76x = 7,048,772,381.47
5. Step 5: Solve for x
   x = 7,048,772,381.47/109,515.76
6. Step 6: Final answer
   x = 64,363.09