Finding the Fourth Proportional to 112,580.01, 155,379.47 and 64,824.57

Step by Step Solution

1. Step 1: Write the proportion equation
   112,580.01 : 155,379.47 = 64,824.57 : x
2. Step 2: Convert to fraction form
   112,580.01/155,379.47 = 64,824.57/x
3. Step 3: Cross multiply
   112,580.01x = 155,379.47 × 64,824.57
4. Step 4: Simplify right side
   112,580.01x = 10,072,407,005.46
5. Step 5: Solve for x
   x = 10,072,407,005.46/112,580.01
6. Step 6: Final answer
   x = 89,468.88