Finding the Fourth Proportional to 76,502.61, 105,570.15 and 42,510.93

Step by Step Solution

1. Step 1: Write the proportion equation
   76,502.61 : 105,570.15 = 42,510.93 : x
2. Step 2: Convert to fraction form
   76,502.61/105,570.15 = 42,510.93/x
3. Step 3: Cross multiply
   76,502.61x = 105,570.15 × 42,510.93
4. Step 4: Simplify right side
   76,502.61x = 4,487,885,256.74
5. Step 5: Solve for x
   x = 4,487,885,256.74/76,502.61
6. Step 6: Final answer
   x = 58,663.17