Finding the Fourth Proportional to 112,840.49, 155,714.10 and 65,090.99

Step by Step Solution

1. Step 1: Write the proportion equation
   112,840.49 : 155,714.10 = 65,090.99 : x
2. Step 2: Convert to fraction form
   112,840.49/155,714.10 = 65,090.99/x
3. Step 3: Cross multiply
   112,840.49x = 155,714.10 × 65,090.99
4. Step 4: Simplify right side
   112,840.49x = 10,135,585,071.15
5. Step 5: Solve for x
   x = 10,135,585,071.15/112,840.49
6. Step 6: Final answer
   x = 89,822.23