Finding the Fourth Proportional to 103,071.96, 142,237.98 and 57,749.16

Step by Step Solution

1. Step 1: Write the proportion equation
   103,071.96 : 142,237.98 = 57,749.16 : x
2. Step 2: Convert to fraction form
   103,071.96/142,237.98 = 57,749.16/x
3. Step 3: Cross multiply
   103,071.96x = 142,237.98 × 57,749.16
4. Step 4: Simplify right side
   103,071.96x = 8,214,123,865.10
5. Step 5: Solve for x
   x = 8,214,123,865.10/103,071.96
6. Step 6: Final answer
   x = 79,693.10