Finding the Fourth Proportional to 100,453.88, 151,282.37 and 91,485.83

Step by Step Solution

1. Step 1: Write the proportion equation
   100,453.88 : 151,282.37 = 91,485.83 : x
2. Step 2: Convert to fraction form
   100,453.88/151,282.37 = 91,485.83/x
3. Step 3: Cross multiply
   100,453.88x = 151,282.37 × 91,485.83
4. Step 4: Simplify right side
   100,453.88x = 13,840,191,969.98
5. Step 5: Solve for x
   x = 13,840,191,969.98/100,453.88
6. Step 6: Final answer
   x = 137,776.59