Finding the Fourth Proportional to 77,894.17, 107,493.81 and 42,084.07

Step by Step Solution

1. Step 1: Write the proportion equation
   77,894.17 : 107,493.81 = 42,084.07 : x
2. Step 2: Convert to fraction form
   77,894.17/107,493.81 = 42,084.07/x
3. Step 3: Cross multiply
   77,894.17x = 107,493.81 × 42,084.07
4. Step 4: Simplify right side
   77,894.17x = 4,523,777,024.61
5. Step 5: Solve for x
   x = 4,523,777,024.61/77,894.17
6. Step 6: Final answer
   x = 58,075.94