Finding the Fourth Proportional to 89,875.48, 134,528.88 and 56,479.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89,875.48 : 134,528.88 = 56,479.98 : x
2. Step 2: Convert to fraction form
   89,875.48/134,528.88 = 56,479.98/x
3. Step 3: Cross multiply
   89,875.48x = 134,528.88 × 56,479.98
4. Step 4: Simplify right side
   89,875.48x = 7,598,188,451.82
5. Step 5: Solve for x
   x = 7,598,188,451.82/89,875.48
6. Step 6: Final answer
   x = 84,541.28