Finding the Fourth Proportional to 91,799.15, 137,569.41 and 72,995.72

Step by Step Solution

1. Step 1: Write the proportion equation
   91,799.15 : 137,569.41 = 72,995.72 : x
2. Step 2: Convert to fraction form
   91,799.15/137,569.41 = 72,995.72/x
3. Step 3: Cross multiply
   91,799.15x = 137,569.41 × 72,995.72
4. Step 4: Simplify right side
   91,799.15x = 10,041,977,445.08
5. Step 5: Solve for x
   x = 10,041,977,445.08/91,799.15
6. Step 6: Final answer
   x = 109,390.75