Finding the Fourth Proportional to 104,525.80, 156,990.30 and 89,566.72

Step by Step Solution

1. Step 1: Write the proportion equation
   104,525.80 : 156,990.30 = 89,566.72 : x
2. Step 2: Convert to fraction form
   104,525.80/156,990.30 = 89,566.72/x
3. Step 3: Cross multiply
   104,525.80x = 156,990.30 × 89,566.72
4. Step 4: Simplify right side
   104,525.80x = 14,061,106,242.82
5. Step 5: Solve for x
   x = 14,061,106,242.82/104,525.80
6. Step 6: Final answer
   x = 134,522.83