Finding the Fourth Proportional to 99,773.86, 137,705.49 and 59,490.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,773.86 : 137,705.49 = 59,490.10 : x
2. Step 2: Convert to fraction form
   99,773.86/137,705.49 = 59,490.10/x
3. Step 3: Cross multiply
   99,773.86x = 137,705.49 × 59,490.10
4. Step 4: Simplify right side
   99,773.86x = 8,192,113,370.65
5. Step 5: Solve for x
   x = 8,192,113,370.65/99,773.86
6. Step 6: Final answer
   x = 82,106.81