Finding the Fourth Proportional to 42,988.79, 64,115.69 and 37,758.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,988.79 : 64,115.69 = 37,758.22 : x
2. Step 2: Convert to fraction form
   42,988.79/64,115.69 = 37,758.22/x
3. Step 3: Cross multiply
   42,988.79x = 64,115.69 × 37,758.22
4. Step 4: Simplify right side
   42,988.79x = 2,420,893,979.39
5. Step 5: Solve for x
   x = 2,420,893,979.39/42,988.79
6. Step 6: Final answer
   x = 56,314.54