Finding the Fourth Proportional to 78,379.63, 108,164.67 and 42,570.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,379.63 : 108,164.67 = 42,570.34 : x
2. Step 2: Convert to fraction form
   78,379.63/108,164.67 = 42,570.34/x
3. Step 3: Cross multiply
   78,379.63x = 108,164.67 × 42,570.34
4. Step 4: Simplify right side
   78,379.63x = 4,604,606,777.89
5. Step 5: Solve for x
   x = 4,604,606,777.89/78,379.63
6. Step 6: Final answer
   x = 58,747.49