Finding the Fourth Proportional to 115,062.76, 158,776.50 and 64,071.64

Step by Step Solution

1. Step 1: Write the proportion equation
   115,062.76 : 158,776.50 = 64,071.64 : x
2. Step 2: Convert to fraction form
   115,062.76/158,776.50 = 64,071.64/x
3. Step 3: Cross multiply
   115,062.76x = 158,776.50 × 64,071.64
4. Step 4: Simplify right side
   115,062.76x = 10,173,070,748.46
5. Step 5: Solve for x
   x = 10,173,070,748.46/115,062.76
6. Step 6: Final answer
   x = 88,413.23