Finding the Fourth Proportional to 89,667.84, 123,741.99 and 51,428.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89,667.84 : 123,741.99 = 51,428.88 : x
2. Step 2: Convert to fraction form
   89,667.84/123,741.99 = 51,428.88/x
3. Step 3: Cross multiply
   89,667.84x = 123,741.99 × 51,428.88
4. Step 4: Simplify right side
   89,667.84x = 6,363,911,954.67
5. Step 5: Solve for x
   x = 6,363,911,954.67/89,667.84
6. Step 6: Final answer
   x = 70,972.07