Finding the Fourth Proportional to 77,131.95, 115,668.72 and 42,052.51

Step by Step Solution

1. Step 1: Write the proportion equation
   77,131.95 : 115,668.72 = 42,052.51 : x
2. Step 2: Convert to fraction form
   77,131.95/115,668.72 = 42,052.51/x
3. Step 3: Cross multiply
   77,131.95x = 115,668.72 × 42,052.51
4. Step 4: Simplify right side
   77,131.95x = 4,864,160,004.49
5. Step 5: Solve for x
   x = 4,864,160,004.49/77,131.95
6. Step 6: Final answer
   x = 63,062.84