Finding the Fourth Proportional to 99,546.84, 137,373.57 and 57,112.02

Step by Step Solution

1. Step 1: Write the proportion equation
   99,546.84 : 137,373.57 = 57,112.02 : x
2. Step 2: Convert to fraction form
   99,546.84/137,373.57 = 57,112.02/x
3. Step 3: Cross multiply
   99,546.84x = 137,373.57 × 57,112.02
4. Step 4: Simplify right side
   99,546.84x = 7,845,682,077.31
5. Step 5: Solve for x
   x = 7,845,682,077.31/99,546.84
6. Step 6: Final answer
   x = 78,813.97