Finding the Fourth Proportional to 102,536.47, 141,500.67 and 57,213.63

Step by Step Solution

1. Step 1: Write the proportion equation
   102,536.47 : 141,500.67 = 57,213.63 : x
2. Step 2: Convert to fraction form
   102,536.47/141,500.67 = 57,213.63/x
3. Step 3: Cross multiply
   102,536.47x = 141,500.67 × 57,213.63
4. Step 4: Simplify right side
   102,536.47x = 8,095,766,978.13
5. Step 5: Solve for x
   x = 8,095,766,978.13/102,536.47
6. Step 6: Final answer
   x = 78,955.00