Finding the Fourth Proportional to 112,377.65, 155,085.89 and 64,631.06

Step by Step Solution

1. Step 1: Write the proportion equation
   112,377.65 : 155,085.89 = 64,631.06 : x
2. Step 2: Convert to fraction form
   112,377.65/155,085.89 = 64,631.06/x
3. Step 3: Cross multiply
   112,377.65x = 155,085.89 × 64,631.06
4. Step 4: Simplify right side
   112,377.65x = 10,023,364,847.89
5. Step 5: Solve for x
   x = 10,023,364,847.89/112,377.65
6. Step 6: Final answer
   x = 89,193.58