Finding the Fourth Proportional to 76,505.54, 105,575.54 and 42,513.16

Step by Step Solution

1. Step 1: Write the proportion equation
   76,505.54 : 105,575.54 = 42,513.16 : x
2. Step 2: Convert to fraction form
   76,505.54/105,575.54 = 42,513.16/x
3. Step 3: Cross multiply
   76,505.54x = 105,575.54 × 42,513.16
4. Step 4: Simplify right side
   76,505.54x = 4,488,349,824.11
5. Step 5: Solve for x
   x = 4,488,349,824.11/76,505.54
6. Step 6: Final answer
   x = 58,666.99