Finding the Fourth Proportional to 139,569.21, 192,543.34 and 93,012.54

Step by Step Solution

1. Step 1: Write the proportion equation
   139,569.21 : 192,543.34 = 93,012.54 : x
2. Step 2: Convert to fraction form
   139,569.21/192,543.34 = 93,012.54/x
3. Step 3: Cross multiply
   139,569.21x = 192,543.34 × 93,012.54
4. Step 4: Simplify right side
   139,569.21x = 17,908,945,113.48
5. Step 5: Solve for x
   x = 17,908,945,113.48/139,569.21
6. Step 6: Final answer
   x = 128,315.87