Finding the Fourth Proportional to 78,189.41, 107,901.57 and 42,379.38

Step by Step Solution

1. Step 1: Write the proportion equation
   78,189.41 : 107,901.57 = 42,379.38 : x
2. Step 2: Convert to fraction form
   78,189.41/107,901.57 = 42,379.38/x
3. Step 3: Cross multiply
   78,189.41x = 107,901.57 × 42,379.38
4. Step 4: Simplify right side
   78,189.41x = 4,572,801,637.63
5. Step 5: Solve for x
   x = 4,572,801,637.63/78,189.41
6. Step 6: Final answer
   x = 58,483.65