Finding the Fourth Proportional to 78,077.87, 107,746.56 and 42,267.09

Step by Step Solution

1. Step 1: Write the proportion equation
   78,077.87 : 107,746.56 = 42,267.09 : x
2. Step 2: Convert to fraction form
   78,077.87/107,746.56 = 42,267.09/x
3. Step 3: Cross multiply
   78,077.87x = 107,746.56 × 42,267.09
4. Step 4: Simplify right side
   78,077.87x = 4,554,133,548.71
5. Step 5: Solve for x
   x = 4,554,133,548.71/78,077.87
6. Step 6: Final answer
   x = 58,328.10