Finding the Fourth Proportional to 89,720.72, 134,428.04 and 63,374.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,720.72 : 134,428.04 = 63,374.72 : x
2. Step 2: Convert to fraction form
   89,720.72/134,428.04 = 63,374.72/x
3. Step 3: Cross multiply
   89,720.72x = 134,428.04 × 63,374.72
4. Step 4: Simplify right side
   89,720.72x = 8,519,339,395.15
5. Step 5: Solve for x
   x = 8,519,339,395.15/89,720.72
6. Step 6: Final answer
   x = 94,953.98