Finding the Fourth Proportional to 111,109.91, 166,531.62 and 57,018.96

Step by Step Solution

1. Step 1: Write the proportion equation
   111,109.91 : 166,531.62 = 57,018.96 : x
2. Step 2: Convert to fraction form
   111,109.91/166,531.62 = 57,018.96/x
3. Step 3: Cross multiply
   111,109.91x = 166,531.62 × 57,018.96
4. Step 4: Simplify right side
   111,109.91x = 9,495,460,301.34
5. Step 5: Solve for x
   x = 9,495,460,301.34/111,109.91
6. Step 6: Final answer
   x = 85,460.07