Finding the Fourth Proportional to 158,931.98, 219,338.43 and 90,970.27

Step by Step Solution

1. Step 1: Write the proportion equation
   158,931.98 : 219,338.43 = 90,970.27 : x
2. Step 2: Convert to fraction form
   158,931.98/219,338.43 = 90,970.27/x
3. Step 3: Cross multiply
   158,931.98x = 219,338.43 × 90,970.27
4. Step 4: Simplify right side
   158,931.98x = 19,953,276,542.77
5. Step 5: Solve for x
   x = 19,953,276,542.77/158,931.98
6. Step 6: Final answer
   x = 125,546.01