Finding the Fourth Proportional to 89,373.79, 133,856.52 and 42,659.47

Step by Step Solution

1. Step 1: Write the proportion equation
   89,373.79 : 133,856.52 = 42,659.47 : x
2. Step 2: Convert to fraction form
   89,373.79/133,856.52 = 42,659.47/x
3. Step 3: Cross multiply
   89,373.79x = 133,856.52 × 42,659.47
4. Step 4: Simplify right side
   89,373.79x = 5,710,248,199.24
5. Step 5: Solve for x
   x = 5,710,248,199.24/89,373.79
6. Step 6: Final answer
   x = 63,891.75