Finding the Fourth Proportional to 89,385.08, 134,106.76 and 42,631.88

Step by Step Solution

1. Step 1: Write the proportion equation
   89,385.08 : 134,106.76 = 42,631.88 : x
2. Step 2: Convert to fraction form
   89,385.08/134,106.76 = 42,631.88/x
3. Step 3: Cross multiply
   89,385.08x = 134,106.76 × 42,631.88
4. Step 4: Simplify right side
   89,385.08x = 5,717,223,299.51
5. Step 5: Solve for x
   x = 5,717,223,299.51/89,385.08
6. Step 6: Final answer
   x = 63,961.72