Finding the Fourth Proportional to 77,390.16, 116,128.98 and 33,012.72

Step by Step Solution

1. Step 1: Write the proportion equation
   77,390.16 : 116,128.98 = 33,012.72 : x
2. Step 2: Convert to fraction form
   77,390.16/116,128.98 = 33,012.72/x
3. Step 3: Cross multiply
   77,390.16x = 116,128.98 × 33,012.72
4. Step 4: Simplify right side
   77,390.16x = 3,833,733,500.63
5. Step 5: Solve for x
   x = 3,833,733,500.63/77,390.16
6. Step 6: Final answer
   x = 49,537.74