Finding the Fourth Proportional to 67,645.40, 93,379.40 and 42,164.45

Step by Step Solution

1. Step 1: Write the proportion equation
   67,645.40 : 93,379.40 = 42,164.45 : x
2. Step 2: Convert to fraction form
   67,645.40/93,379.40 = 42,164.45/x
3. Step 3: Cross multiply
   67,645.40x = 93,379.40 × 42,164.45
4. Step 4: Simplify right side
   67,645.40x = 3,937,290,364.61
5. Step 5: Solve for x
   x = 3,937,290,364.61/67,645.40
6. Step 6: Final answer
   x = 58,204.85