Finding the Fourth Proportional to 125,429.83, 188,137.42 and 91,729.98

Step by Step Solution

1. Step 1: Write the proportion equation
   125,429.83 : 188,137.42 = 91,729.98 : x
2. Step 2: Convert to fraction form
   125,429.83/188,137.42 = 91,729.98/x
3. Step 3: Cross multiply
   125,429.83x = 188,137.42 × 91,729.98
4. Step 4: Simplify right side
   125,429.83x = 17,257,841,544.53
5. Step 5: Solve for x
   x = 17,257,841,544.53/125,429.83
6. Step 6: Final answer
   x = 137,589.61