Finding the Fourth Proportional to 78,113.40, 107,796.48 and 42,303.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,113.40 : 107,796.48 = 42,303.72 : x
2. Step 2: Convert to fraction form
   78,113.40/107,796.48 = 42,303.72/x
3. Step 3: Cross multiply
   78,113.40x = 107,796.48 × 42,303.72
4. Step 4: Simplify right side
   78,113.40x = 4,560,192,106.91
5. Step 5: Solve for x
   x = 4,560,192,106.91/78,113.40
6. Step 6: Final answer
   x = 58,379.13