Finding the Fourth Proportional to 89,643.23, 134,421.95 and 52,213.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,643.23 : 134,421.95 = 52,213.98 : x
2. Step 2: Convert to fraction form
   89,643.23/134,421.95 = 52,213.98/x
3. Step 3: Cross multiply
   89,643.23x = 134,421.95 × 52,213.98
4. Step 4: Simplify right side
   89,643.23x = 7,018,705,008.86
5. Step 5: Solve for x
   x = 7,018,705,008.86/89,643.23
6. Step 6: Final answer
   x = 78,295.99