Finding the Fourth Proportional to 70,935.63, 106,215.72 and 42,818.10

Step by Step Solution

1. Step 1: Write the proportion equation
   70,935.63 : 106,215.72 = 42,818.10 : x
2. Step 2: Convert to fraction form
   70,935.63/106,215.72 = 42,818.10/x
3. Step 3: Cross multiply
   70,935.63x = 106,215.72 × 42,818.10
4. Step 4: Simplify right side
   70,935.63x = 4,547,955,320.53
5. Step 5: Solve for x
   x = 4,547,955,320.53/70,935.63
6. Step 6: Final answer
   x = 64,113.84