Finding the Fourth Proportional to 64,856, 97,158.12 and 42,601.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,856 : 97,158.12 = 42,601.86 : x
2. Step 2: Convert to fraction form
   64,856/97,158.12 = 42,601.86/x
3. Step 3: Cross multiply
   64,856x = 97,158.12 × 42,601.86
4. Step 4: Simplify right side
   64,856x = 4,139,116,626.10
5. Step 5: Solve for x
   x = 4,139,116,626.10/64,856
6. Step 6: Final answer
   x = 63,820.10