Finding the Fourth Proportional to 89,897.46, 134,836.94 and 56,516.31

Step by Step Solution

1. Step 1: Write the proportion equation
   89,897.46 : 134,836.94 = 56,516.31 : x
2. Step 2: Convert to fraction form
   89,897.46/134,836.94 = 56,516.31/x
3. Step 3: Cross multiply
   89,897.46x = 134,836.94 × 56,516.31
4. Step 4: Simplify right side
   89,897.46x = 7,620,486,017.91
5. Step 5: Solve for x
   x = 7,620,486,017.91/89,897.46
6. Step 6: Final answer
   x = 84,768.65