Finding the Fourth Proportional to 115,820.84, 159,835.02 and 90,355.98

Step by Step Solution

1. Step 1: Write the proportion equation
   115,820.84 : 159,835.02 = 90,355.98 : x
2. Step 2: Convert to fraction form
   115,820.84/159,835.02 = 90,355.98/x
3. Step 3: Cross multiply
   115,820.84x = 159,835.02 × 90,355.98
4. Step 4: Simplify right side
   115,820.84x = 14,442,049,870.42
5. Step 5: Solve for x
   x = 14,442,049,870.42/115,820.84
6. Step 6: Final answer
   x = 124,693.02