Finding the Fourth Proportional to 109,976.53, 164,931.88 and 57,357.31

Step by Step Solution

1. Step 1: Write the proportion equation
   109,976.53 : 164,931.88 = 57,357.31 : x
2. Step 2: Convert to fraction form
   109,976.53/164,931.88 = 57,357.31/x
3. Step 3: Cross multiply
   109,976.53x = 164,931.88 × 57,357.31
4. Step 4: Simplify right side
   109,976.53x = 9,460,048,970.04
5. Step 5: Solve for x
   x = 9,460,048,970.04/109,976.53
6. Step 6: Final answer
   x = 86,018.80