Finding the Fourth Proportional to 70,417.42, 105,485.42 and 42,322.30

Step by Step Solution

1. Step 1: Write the proportion equation
   70,417.42 : 105,485.42 = 42,322.30 : x
2. Step 2: Convert to fraction form
   70,417.42/105,485.42 = 42,322.30/x
3. Step 3: Cross multiply
   70,417.42x = 105,485.42 × 42,322.30
4. Step 4: Simplify right side
   70,417.42x = 4,464,385,432.96
5. Step 5: Solve for x
   x = 4,464,385,432.96/70,417.42
6. Step 6: Final answer
   x = 63,398.88