Finding the Fourth Proportional to 89,437.50, 134,219.43 and 42,694.02

Step by Step Solution

1. Step 1: Write the proportion equation
   89,437.50 : 134,219.43 = 42,694.02 : x
2. Step 2: Convert to fraction form
   89,437.50/134,219.43 = 42,694.02/x
3. Step 3: Cross multiply
   89,437.50x = 134,219.43 × 42,694.02
4. Step 4: Simplify right side
   89,437.50x = 5,730,367,028.81
5. Step 5: Solve for x
   x = 5,730,367,028.81/89,437.50
6. Step 6: Final answer
   x = 64,071.19