Finding the Fourth Proportional to 77,312.82, 105,892.27 and 72,773.58

Step by Step Solution

1. Step 1: Write the proportion equation
   77,312.82 : 105,892.27 = 72,773.58 : x
2. Step 2: Convert to fraction form
   77,312.82/105,892.27 = 72,773.58/x
3. Step 3: Cross multiply
   77,312.82x = 105,892.27 × 72,773.58
4. Step 4: Simplify right side
   77,312.82x = 7,706,159,582.23
5. Step 5: Solve for x
   x = 7,706,159,582.23/77,312.82
6. Step 6: Final answer
   x = 99,675.05