Finding the Fourth Proportional to 99,513.95, 137,463.59 and 79,511.09

Step by Step Solution

1. Step 1: Write the proportion equation
   99,513.95 : 137,463.59 = 79,511.09 : x
2. Step 2: Convert to fraction form
   99,513.95/137,463.59 = 79,511.09/x
3. Step 3: Cross multiply
   99,513.95x = 137,463.59 × 79,511.09
4. Step 4: Simplify right side
   99,513.95x = 10,929,879,387.67
5. Step 5: Solve for x
   x = 10,929,879,387.67/99,513.95
6. Step 6: Final answer
   x = 109,832.64