Finding the Fourth Proportional to 77,347.16, 106,732.56 and 42,892.88

Step by Step Solution

1. Step 1: Write the proportion equation
   77,347.16 : 106,732.56 = 42,892.88 : x
2. Step 2: Convert to fraction form
   77,347.16/106,732.56 = 42,892.88/x
3. Step 3: Cross multiply
   77,347.16x = 106,732.56 × 42,892.88
4. Step 4: Simplify right side
   77,347.16x = 4,578,066,888.17
5. Step 5: Solve for x
   x = 4,578,066,888.17/77,347.16
6. Step 6: Final answer
   x = 59,188.56