Finding the Fourth Proportional to 78,539.63, 108,384.08 and 42,729.53

Step by Step Solution

1. Step 1: Write the proportion equation
   78,539.63 : 108,384.08 = 42,729.53 : x
2. Step 2: Convert to fraction form
   78,539.63/108,384.08 = 42,729.53/x
3. Step 3: Cross multiply
   78,539.63x = 108,384.08 × 42,729.53
4. Step 4: Simplify right side
   78,539.63x = 4,631,200,042.31
5. Step 5: Solve for x
   x = 4,631,200,042.31/78,539.63
6. Step 6: Final answer
   x = 58,966.41