Finding the Fourth Proportional to 139,976.04, 193,167.54 and 89,704.20

Step by Step Solution

1. Step 1: Write the proportion equation
   139,976.04 : 193,167.54 = 89,704.20 : x
2. Step 2: Convert to fraction form
   139,976.04/193,167.54 = 89,704.20/x
3. Step 3: Cross multiply
   139,976.04x = 193,167.54 × 89,704.20
4. Step 4: Simplify right side
   139,976.04x = 17,327,939,641.67
5. Step 5: Solve for x
   x = 17,327,939,641.67/139,976.04
6. Step 6: Final answer
   x = 123,792.18