Finding the Fourth Proportional to 77,342.84, 115,784.52 and 42,175.88

Step by Step Solution

1. Step 1: Write the proportion equation
   77,342.84 : 115,784.52 = 42,175.88 : x
2. Step 2: Convert to fraction form
   77,342.84/115,784.52 = 42,175.88/x
3. Step 3: Cross multiply
   77,342.84x = 115,784.52 × 42,175.88
4. Step 4: Simplify right side
   77,342.84x = 4,883,314,021.38
5. Step 5: Solve for x
   x = 4,883,314,021.38/77,342.84
6. Step 6: Final answer
   x = 63,138.54