Finding the Fourth Proportional to 137,359.30, 205,940.55 and 53,047.30

Step by Step Solution

1. Step 1: Write the proportion equation
   137,359.30 : 205,940.55 = 53,047.30 : x
2. Step 2: Convert to fraction form
   137,359.30/205,940.55 = 53,047.30/x
3. Step 3: Cross multiply
   137,359.30x = 205,940.55 × 53,047.30
4. Step 4: Simplify right side
   137,359.30x = 10,924,590,138.02
5. Step 5: Solve for x
   x = 10,924,590,138.02/137,359.30
6. Step 6: Final answer
   x = 79,532.95