Finding the Fourth Proportional to 89,034.72, 133,459.83 and 55,678.20

Step by Step Solution

1. Step 1: Write the proportion equation
   89,034.72 : 133,459.83 = 55,678.20 : x
2. Step 2: Convert to fraction form
   89,034.72/133,459.83 = 55,678.20/x
3. Step 3: Cross multiply
   89,034.72x = 133,459.83 × 55,678.20
4. Step 4: Simplify right side
   89,034.72x = 7,430,803,106.71
5. Step 5: Solve for x
   x = 7,430,803,106.71/89,034.72
6. Step 6: Final answer
   x = 83,459.61