Finding the Fourth Proportional to 77,112.72, 115,590.30 and 43,762.32

Step by Step Solution

1. Step 1: Write the proportion equation
   77,112.72 : 115,590.30 = 43,762.32 : x
2. Step 2: Convert to fraction form
   77,112.72/115,590.30 = 43,762.32/x
3. Step 3: Cross multiply
   77,112.72x = 115,590.30 × 43,762.32
4. Step 4: Simplify right side
   77,112.72x = 5,058,499,697.50
5. Step 5: Solve for x
   x = 5,058,499,697.50/77,112.72
6. Step 6: Final answer
   x = 65,598.77