Finding the Fourth Proportional to 99,628.27, 137,482.00 and 56,602.12

Step by Step Solution

1. Step 1: Write the proportion equation
   99,628.27 : 137,482.00 = 56,602.12 : x
2. Step 2: Convert to fraction form
   99,628.27/137,482.00 = 56,602.12/x
3. Step 3: Cross multiply
   99,628.27x = 137,482.00 × 56,602.12
4. Step 4: Simplify right side
   99,628.27x = 7,781,772,838.15
5. Step 5: Solve for x
   x = 7,781,772,838.15/99,628.27
6. Step 6: Final answer
   x = 78,108.08