Finding the Fourth Proportional to 99,145.82, 136,820.27 and 53,822.81

Step by Step Solution

1. Step 1: Write the proportion equation
   99,145.82 : 136,820.27 = 53,822.81 : x
2. Step 2: Convert to fraction form
   99,145.82/136,820.27 = 53,822.81/x
3. Step 3: Cross multiply
   99,145.82x = 136,820.27 × 53,822.81
4. Step 4: Simplify right side
   99,145.82x = 7,364,051,872.97
5. Step 5: Solve for x
   x = 7,364,051,872.97/99,145.82
6. Step 6: Final answer
   x = 74,274.96