Finding the Fourth Proportional to 98,700.84, 136,047.24 and 77,152.50

Step by Step Solution

1. Step 1: Write the proportion equation
   98,700.84 : 136,047.24 = 77,152.50 : x
2. Step 2: Convert to fraction form
   98,700.84/136,047.24 = 77,152.50/x
3. Step 3: Cross multiply
   98,700.84x = 136,047.24 × 77,152.50
4. Step 4: Simplify right side
   98,700.84x = 10,496,384,684.10
5. Step 5: Solve for x
   x = 10,496,384,684.10/98,700.84
6. Step 6: Final answer
   x = 106,345.44