Finding the Fourth Proportional to 77,946.84, 107,566.58 and 42,136.72

Step by Step Solution

1. Step 1: Write the proportion equation
   77,946.84 : 107,566.58 = 42,136.72 : x
2. Step 2: Convert to fraction form
   77,946.84/107,566.58 = 42,136.72/x
3. Step 3: Cross multiply
   77,946.84x = 107,566.58 × 42,136.72
4. Step 4: Simplify right side
   77,946.84x = 4,532,502,862.82
5. Step 5: Solve for x
   x = 4,532,502,862.82/77,946.84
6. Step 6: Final answer
   x = 58,148.64