Finding the Fourth Proportional to 99,694.86, 137,538.37 and 63,905.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,694.86 : 137,538.37 = 63,905.82 : x
2. Step 2: Convert to fraction form
   99,694.86/137,538.37 = 63,905.82/x
3. Step 3: Cross multiply
   99,694.86x = 137,538.37 × 63,905.82
4. Step 4: Simplify right side
   99,694.86x = 8,789,502,316.31
5. Step 5: Solve for x
   x = 8,789,502,316.31/99,694.86
6. Step 6: Final answer
   x = 88,164.05