Finding the Fourth Proportional to 78,109.37, 107,790.71 and 42,299.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78,109.37 : 107,790.71 = 42,299.37 : x
2. Step 2: Convert to fraction form
   78,109.37/107,790.71 = 42,299.37/x
3. Step 3: Cross multiply
   78,109.37x = 107,790.71 × 42,299.37
4. Step 4: Simplify right side
   78,109.37x = 4,559,478,585.90
5. Step 5: Solve for x
   x = 4,559,478,585.90/78,109.37
6. Step 6: Final answer
   x = 58,373.01