Finding the Fourth Proportional to 103,639.45, 155,461.01 and 37,127.31

Step by Step Solution

1. Step 1: Write the proportion equation
   103,639.45 : 155,461.01 = 37,127.31 : x
2. Step 2: Convert to fraction form
   103,639.45/155,461.01 = 37,127.31/x
3. Step 3: Cross multiply
   103,639.45x = 155,461.01 × 37,127.31
4. Step 4: Simplify right side
   103,639.45x = 5,771,849,111.18
5. Step 5: Solve for x
   x = 5,771,849,111.18/103,639.45
6. Step 6: Final answer
   x = 55,691.62