Finding the Fourth Proportional to 78,699.53, 108,602.18 and 42,888.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,699.53 : 108,602.18 = 42,888.76 : x
2. Step 2: Convert to fraction form
   78,699.53/108,602.18 = 42,888.76/x
3. Step 3: Cross multiply
   78,699.53x = 108,602.18 × 42,888.76
4. Step 4: Simplify right side
   78,699.53x = 4,657,812,833.50
5. Step 5: Solve for x
   x = 4,657,812,833.50/78,699.53
6. Step 6: Final answer
   x = 59,184.76