Finding the Fourth Proportional to 111,345.30, 167,115.15 and 89,102.70

Step by Step Solution

1. Step 1: Write the proportion equation
   111,345.30 : 167,115.15 = 89,102.70 : x
2. Step 2: Convert to fraction form
   111,345.30/167,115.15 = 89,102.70/x
3. Step 3: Cross multiply
   111,345.30x = 167,115.15 × 89,102.70
4. Step 4: Simplify right side
   111,345.30x = 14,890,411,075.91
5. Step 5: Solve for x
   x = 14,890,411,075.91/111,345.30
6. Step 6: Final answer
   x = 133,731.83