Finding the Fourth Proportional to 109,508.82, 164,264.55 and 42,980.28

Step by Step Solution

1. Step 1: Write the proportion equation
   109,508.82 : 164,264.55 = 42,980.28 : x
2. Step 2: Convert to fraction form
   109,508.82/164,264.55 = 42,980.28/x
3. Step 3: Cross multiply
   109,508.82x = 164,264.55 × 42,980.28
4. Step 4: Simplify right side
   109,508.82x = 7,060,136,138.17
5. Step 5: Solve for x
   x = 7,060,136,138.17/109,508.82
6. Step 6: Final answer
   x = 64,470.94