Finding the Fourth Proportional to 102,768.88, 141,802.89 and 57,432.37

Step by Step Solution

1. Step 1: Write the proportion equation
   102,768.88 : 141,802.89 = 57,432.37 : x
2. Step 2: Convert to fraction form
   102,768.88/141,802.89 = 57,432.37/x
3. Step 3: Cross multiply
   102,768.88x = 141,802.89 × 57,432.37
4. Step 4: Simplify right side
   102,768.88x = 8,144,076,045.55
5. Step 5: Solve for x
   x = 8,144,076,045.55/102,768.88
6. Step 6: Final answer
   x = 79,246.52