Finding the Fourth Proportional to 109,976.61, 164,959.45 and 64,409.93

Step by Step Solution

1. Step 1: Write the proportion equation
   109,976.61 : 164,959.45 = 64,409.93 : x
2. Step 2: Convert to fraction form
   109,976.61/164,959.45 = 64,409.93/x
3. Step 3: Cross multiply
   109,976.61x = 164,959.45 × 64,409.93
4. Step 4: Simplify right side
   109,976.61x = 10,625,025,641.52
5. Step 5: Solve for x
   x = 10,625,025,641.52/109,976.61
6. Step 6: Final answer
   x = 96,611.69