Finding the Fourth Proportional to 91,988.53, 137,707.76 and 56,337.59

Step by Step Solution

1. Step 1: Write the proportion equation
   91,988.53 : 137,707.76 = 56,337.59 : x
2. Step 2: Convert to fraction form
   91,988.53/137,707.76 = 56,337.59/x
3. Step 3: Cross multiply
   91,988.53x = 137,707.76 × 56,337.59
4. Step 4: Simplify right side
   91,988.53x = 7,758,123,807.81
5. Step 5: Solve for x
   x = 7,758,123,807.81/91,988.53
6. Step 6: Final answer
   x = 84,337.95