Finding the Fourth Proportional to 78,109.16, 107,790.74 and 42,299.24

Step by Step Solution

1. Step 1: Write the proportion equation
   78,109.16 : 107,790.74 = 42,299.24 : x
2. Step 2: Convert to fraction form
   78,109.16/107,790.74 = 42,299.24/x
3. Step 3: Cross multiply
   78,109.16x = 107,790.74 × 42,299.24
4. Step 4: Simplify right side
   78,109.16x = 4,559,465,630.59
5. Step 5: Solve for x
   x = 4,559,465,630.59/78,109.16
6. Step 6: Final answer
   x = 58,373.00