Finding the Fourth Proportional to 184,402.85, 276,711.89 and 77,780.30

Step by Step Solution

1. Step 1: Write the proportion equation
   184,402.85 : 276,711.89 = 77,780.30 : x
2. Step 2: Convert to fraction form
   184,402.85/276,711.89 = 77,780.30/x
3. Step 3: Cross multiply
   184,402.85x = 276,711.89 × 77,780.30
4. Step 4: Simplify right side
   184,402.85x = 21,522,732,045.31
5. Step 5: Solve for x
   x = 21,522,732,045.31/184,402.85
6. Step 6: Final answer
   x = 116,715.84