Finding the Fourth Proportional to 102,669.92, 141,678.24 and 59,642.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,669.92 : 141,678.24 = 59,642.72 : x
2. Step 2: Convert to fraction form
   102,669.92/141,678.24 = 59,642.72/x
3. Step 3: Cross multiply
   102,669.92x = 141,678.24 × 59,642.72
4. Step 4: Simplify right side
   102,669.92x = 8,450,075,598.41
5. Step 5: Solve for x
   x = 8,450,075,598.41/102,669.92
6. Step 6: Final answer
   x = 82,303.32