Finding the Fourth Proportional to 103,678.56, 143,075.52 and 58,966.56

Step by Step Solution

1. Step 1: Write the proportion equation
   103,678.56 : 143,075.52 = 58,966.56 : x
2. Step 2: Convert to fraction form
   103,678.56/143,075.52 = 58,966.56/x
3. Step 3: Cross multiply
   103,678.56x = 143,075.52 × 58,966.56
4. Step 4: Simplify right side
   103,678.56x = 8,436,671,234.61
5. Step 5: Solve for x
   x = 8,436,671,234.61/103,678.56
6. Step 6: Final answer
   x = 81,373.35