Finding the Fourth Proportional to 77,964.37, 107,590.76 and 42,154.29

Step by Step Solution

1. Step 1: Write the proportion equation
   77,964.37 : 107,590.76 = 42,154.29 : x
2. Step 2: Convert to fraction form
   77,964.37/107,590.76 = 42,154.29/x
3. Step 3: Cross multiply
   77,964.37x = 107,590.76 × 42,154.29
4. Step 4: Simplify right side
   77,964.37x = 4,535,411,887.59
5. Step 5: Solve for x
   x = 4,535,411,887.59/77,964.37
6. Step 6: Final answer
   x = 58,172.88