Finding the Fourth Proportional to 91,003.62, 136,422.27 and 77,053.53

Step by Step Solution

1. Step 1: Write the proportion equation
   91,003.62 : 136,422.27 = 77,053.53 : x
2. Step 2: Convert to fraction form
   91,003.62/136,422.27 = 77,053.53/x
3. Step 3: Cross multiply
   91,003.62x = 136,422.27 × 77,053.53
4. Step 4: Simplify right side
   91,003.62x = 10,511,817,474.11
5. Step 5: Solve for x
   x = 10,511,817,474.11/91,003.62
6. Step 6: Final answer
   x = 115,509.88