Finding the Fourth Proportional to 78,573.71, 108,428.83 and 42,762.94

Step by Step Solution

1. Step 1: Write the proportion equation
   78,573.71 : 108,428.83 = 42,762.94 : x
2. Step 2: Convert to fraction form
   78,573.71/108,428.83 = 42,762.94/x
3. Step 3: Cross multiply
   78,573.71x = 108,428.83 × 42,762.94
4. Step 4: Simplify right side
   78,573.71x = 4,636,735,173.58
5. Step 5: Solve for x
   x = 4,636,735,173.58/78,573.71
6. Step 6: Final answer
   x = 59,011.28