Finding the Fourth Proportional to 370,061.72, 555,127.42 and 103,821.20

Step by Step Solution

1. Step 1: Write the proportion equation
   370,061.72 : 555,127.42 = 103,821.20 : x
2. Step 2: Convert to fraction form
   370,061.72/555,127.42 = 103,821.20/x
3. Step 3: Cross multiply
   370,061.72x = 555,127.42 × 103,821.20
4. Step 4: Simplify right side
   370,061.72x = 57,633,994,897.30
5. Step 5: Solve for x
   x = 57,633,994,897.30/370,061.72
6. Step 6: Final answer
   x = 155,741.57