Finding the Fourth Proportional to 78,736.10, 108,656.99 and 42,926.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,736.10 : 108,656.99 = 42,926.71 : x
2. Step 2: Convert to fraction form
   78,736.10/108,656.99 = 42,926.71/x
3. Step 3: Cross multiply
   78,736.10x = 108,656.99 × 42,926.71
4. Step 4: Simplify right side
   78,736.10x = 4,664,287,219.10
5. Step 5: Solve for x
   x = 4,664,287,219.10/78,736.10
6. Step 6: Final answer
   x = 59,239.50