Finding the Fourth Proportional to 99,191.91, 136,851.53 and 56,165.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99,191.91 : 136,851.53 = 56,165.52 : x
2. Step 2: Convert to fraction form
   99,191.91/136,851.53 = 56,165.52/x
3. Step 3: Cross multiply
   99,191.91x = 136,851.53 × 56,165.52
4. Step 4: Simplify right side
   99,191.91x = 7,686,337,345.25
5. Step 5: Solve for x
   x = 7,686,337,345.25/99,191.91
6. Step 6: Final answer
   x = 77,489.56