Finding the Fourth Proportional to 91,620.30, 126,437.43 and 55,811.82

Step by Step Solution

1. Step 1: Write the proportion equation
   91,620.30 : 126,437.43 = 55,811.82 : x
2. Step 2: Convert to fraction form
   91,620.30/126,437.43 = 55,811.82/x
3. Step 3: Cross multiply
   91,620.30x = 126,437.43 × 55,811.82
4. Step 4: Simplify right side
   91,620.30x = 7,056,703,084.42
5. Step 5: Solve for x
   x = 7,056,703,084.42/91,620.30
6. Step 6: Final answer
   x = 77,021.17