Finding the Fourth Proportional to 88,514.10, 133,030.35 and 77,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,514.10 : 133,030.35 = 77,109.30 : x
2. Step 2: Convert to fraction form
   88,514.10/133,030.35 = 77,109.30/x
3. Step 3: Cross multiply
   88,514.10x = 133,030.35 × 77,109.30
4. Step 4: Simplify right side
   88,514.10x = 10,257,877,167.26
5. Step 5: Solve for x
   x = 10,257,877,167.26/88,514.10
6. Step 6: Final answer
   x = 115,889.75