Finding the Fourth Proportional to 140,981.34, 211,323.51 and 56,801.28

Step by Step Solution

1. Step 1: Write the proportion equation
   140,981.34 : 211,323.51 = 56,801.28 : x
2. Step 2: Convert to fraction form
   140,981.34/211,323.51 = 56,801.28/x
3. Step 3: Cross multiply
   140,981.34x = 211,323.51 × 56,801.28
4. Step 4: Simplify right side
   140,981.34x = 12,003,445,862.09
5. Step 5: Solve for x
   x = 12,003,445,862.09/140,981.34
6. Step 6: Final answer
   x = 85,142.09