Finding the Fourth Proportional to 91,971,870.66, 137,371,510.51 and 83,204,685.81

Step by Step Solution

1. Step 1: Write the proportion equation
   91,971,870.66 : 137,371,510.51 = 83,204,685.81 : x
2. Step 2: Convert to fraction form
   91,971,870.66/137,371,510.51 = 83,204,685.81/x
3. Step 3: Cross multiply
   91,971,870.66x = 137,371,510.51 × 83,204,685.81
4. Step 4: Simplify right side
   91,971,870.66x = 11,429,953,371,021,650
5. Step 5: Solve for x
   x = 11,429,953,371,021,650/91,971,870.66
6. Step 6: Final answer
   x = 124,276,621.63