Finding the Fourth Proportional to 143,378.82, 215,068.50 and 59,186.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,378.82 : 215,068.50 = 59,186.88 : x
2. Step 2: Convert to fraction form
   143,378.82/215,068.50 = 59,186.88/x
3. Step 3: Cross multiply
   143,378.82x = 215,068.50 × 59,186.88
4. Step 4: Simplify right side
   143,378.82x = 12,729,233,501.28
5. Step 5: Solve for x
   x = 12,729,233,501.28/143,378.82
6. Step 6: Final answer
   x = 88,780.43