Finding the Fourth Proportional to 64,298.10, 96,389.55 and 42,122.10

Step by Step Solution

1. Step 1: Write the proportion equation
   64,298.10 : 96,389.55 = 42,122.10 : x
2. Step 2: Convert to fraction form
   64,298.10/96,389.55 = 42,122.10/x
3. Step 3: Cross multiply
   64,298.10x = 96,389.55 × 42,122.10
4. Step 4: Simplify right side
   64,298.10x = 4,060,130,264.06
5. Step 5: Solve for x
   x = 4,060,130,264.06/64,298.10
6. Step 6: Final answer
   x = 63,145.42