Finding the Fourth Proportional to 99,364.12, 137,123.06 and 54,042.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,364.12 : 137,123.06 = 54,042.52 : x
2. Step 2: Convert to fraction form
   99,364.12/137,123.06 = 54,042.52/x
3. Step 3: Cross multiply
   99,364.12x = 137,123.06 × 54,042.52
4. Step 4: Simplify right side
   99,364.12x = 7,410,475,712.51
5. Step 5: Solve for x
   x = 7,410,475,712.51/99,364.12
6. Step 6: Final answer
   x = 74,578.99