Finding the Fourth Proportional to 78,136.55, 107,828.96 and 42,326.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,136.55 : 107,828.96 = 42,326.56 : x
2. Step 2: Convert to fraction form
   78,136.55/107,828.96 = 42,326.56/x
3. Step 3: Cross multiply
   78,136.55x = 107,828.96 × 42,326.56
4. Step 4: Simplify right side
   78,136.55x = 4,564,028,945.18
5. Step 5: Solve for x
   x = 4,564,028,945.18/78,136.55
6. Step 6: Final answer
   x = 58,410.94