Finding the Fourth Proportional to 78,136.76, 107,828.73 and 42,326.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,136.76 : 107,828.73 = 42,326.76 : x
2. Step 2: Convert to fraction form
   78,136.76/107,828.73 = 42,326.76/x
3. Step 3: Cross multiply
   78,136.76x = 107,828.73 × 42,326.76
4. Step 4: Simplify right side
   78,136.76x = 4,564,041,021.45
5. Step 5: Solve for x
   x = 4,564,041,021.45/78,136.76
6. Step 6: Final answer
   x = 58,410.93