Finding the Fourth Proportional to 89,575.72, 134,252.54 and 78,503.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,575.72 : 134,252.54 = 78,503.96 : x
2. Step 2: Convert to fraction form
   89,575.72/134,252.54 = 78,503.96/x
3. Step 3: Cross multiply
   89,575.72x = 134,252.54 × 78,503.96
4. Step 4: Simplify right side
   89,575.72x = 10,539,356,030.06
5. Step 5: Solve for x
   x = 10,539,356,030.06/89,575.72
6. Step 6: Final answer
   x = 117,658.62