Finding the Fourth Proportional to 137,085.34, 189,176.70 and 76,656.10

Step by Step Solution

1. Step 1: Write the proportion equation
   137,085.34 : 189,176.70 = 76,656.10 : x
2. Step 2: Convert to fraction form
   137,085.34/189,176.70 = 76,656.10/x
3. Step 3: Cross multiply
   137,085.34x = 189,176.70 × 76,656.10
4. Step 4: Simplify right side
   137,085.34x = 14,501,548,032.87
5. Step 5: Solve for x
   x = 14,501,548,032.87/137,085.34
6. Step 6: Final answer
   x = 105,784.82